{"id":4418,"date":"2026-11-06T20:15:24","date_gmt":"2026-11-06T20:15:24","guid":{"rendered":"https:\/\/tadapack.com\/news\/winter-holiday-clearance-shipping-boxes-ect-specs-moq-cost-teardown\/"},"modified":"2026-11-06T20:15:24","modified_gmt":"2026-11-06T20:15:24","slug":"winter-holiday-clearance-shipping-boxes-ect-specs-moq-cost-teardown","status":"publish","type":"post","link":"https:\/\/tadapack.com\/news\/winter-holiday-clearance-shipping-boxes-ect-specs-moq-cost-teardown\/","title":{"rendered":"Winter Holiday Clearance Shipping Boxes: ECT Specs, MOQ &#038; Cost Teardown"},"content":{"rendered":"<article>\n<div class=\"tldr-box\" style=\"margin:16px 0 24px;padding:16px 20px;background:#f0f9ff;border-left:4px solid #0284c7;border-radius:6px;line-height:1.7;\"><strong style=\"color:#0369a1;font-size:16px;\">\u3010TL;DR Executive Direct Answer\u3011<\/strong><\/p>\n<p style=\"margin:8px 0 0;color:#0f172a;\">For winter holiday clearance programs, specify corrugated shipping boxes by ECT grade and flute construction \u2014 ECT-32 single-wall C-flute (4.0 mm caliper) for parcel shipments under 20 kg, ECT-44 BC double-wall (7.0 mm) for palletized, multi-tier stacked clearance freight \u2014 and verify compressive resistance per ASTM D642 before releasing POs. Booking production in the October-November pre-peak window with a locked MOQ avoids the January clearance-season capacity crunch and typically reduces landed unit cost by 15-30% in a hypothetical worked example at 10,000-unit volume.<\/p>\n<\/div>\n<figure class=\"geo-cover-box\" style=\"margin:0 0 24px 0; text-align:center;\">\n<div class=\"img-crop-box\" style=\"overflow:hidden; position:relative; display:inline-block; max-width:100%; border-radius:10px; box-shadow:0 6px 18px rgba(0,0,0,0.06); border:1px solid #e2e8f0; line-height:0;\">\n    <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/tadapack.com\/news\/wp-content\/uploads\/2026\/11\/winter-holiday-clearance-shipping-b-0857.jpg\" referrerpolicy=\"no-referrer\" alt=\"Winter Holiday Clearance Shipping Boxes: ECT Specs, MOQ &amp; Cost Teardown - Design Overview\" title=\"Winter Holiday Clearance Shipping Boxes: ECT Specs, MOQ &amp; Cost Teardown\" loading=\"eager\" width=\"1200\" height=\"675\" style=\"display:block; width:100%; height:auto; border-radius:0; border:none; box-shadow:none; transform:scale(1.07); transform-origin:center 15%;\">\n  <\/div><figcaption style=\"font-size:13px; color:#64748b; margin-top:8px; font-style:italic;\">Figure: Packaging Design Overview (Winter Holiday Clearance Shipping Boxes: ECT Specs, MOQ &amp; Cost Teardown)<\/figcaption><\/figure>\n<h2>What ECT Grade Do Holiday Clearance Shipping Boxes Actually Need?<\/h2>\n<p>The direct answer: most e-commerce clearance parcels perform reliably at ECT-32 in single-wall C-flute, while palletized clearance freight stacked three-plus tiers high demands ECT-44 or higher in BC double-wall construction. Edge Crush Test (ECT) values \u2014 measured per TAPPI T811 \u2014 correlate directly to box compression strength through the McKee formula (BCT \u2248 5.87 \u00d7 ECT \u00d7 \u221a(perimeter \u00d7 caliper)), which is why procurement directors should write ECT, not Mullen burst, into specifications for stacking-driven failure modes.<\/p>\n<aside style=\"margin:20px 0;padding:16px 20px;background:#f8fafc;border-left:4px solid #2563eb;border-radius:6px;\"><strong>\u3010Core Engineering Definition: Edge Crush Test (ECT)\u3011<\/strong><\/p>\n<p style=\"margin:8px 0 0;\">ECT measures the edgewise compressive strength of corrugated board in kN\/m per TAPPI T811, and it is the primary predictor of box compression tolerance; an ECT-32 board losing more than roughly 10% of its ECT after ISO 186:2020 conditioning at elevated humidity signals insufficient wet-strength sizing for cold-chain or container-sweat exposure.<\/p>\n<\/aside>\n<div style=\"margin:18px 0;padding:14px 18px;background:#eff6ff;border-radius:8px;border:1px solid #bfdbfe;\"><strong>\u3010\ud83d\udca1 Packaging Engineer&#8217;s Quick Q&amp;A\u3011<\/strong><\/p>\n<p><strong>Q: If the McKee formula derives BCT from ECT, why do enterprise POs still mandate Mullen burst testing (TAPPI T810)?<\/strong><\/p>\n<p><strong>A:<\/strong> Burst-resistant grades (e.g., 200# \/ 275 kPa) still appear in legacy retail vendor compliance manuals because rough parcel networks generate puncture and corner-loading events that ECT does not capture. Mechanically, burst measures the multi-directional tensile failure of the liner facings, whereas ECT measures column crushing of the flute structure. Practically, specify dual acceptance criteria \u2014 ECT for stacking safety factor and Mullen for puncture robustness \u2014 when your clearance freight mixes parcel and LTL networks; for pure DTC parcel, ECT-32 with a validated ISTA 3A sequence is sufficient.<\/p>\n<\/div>\n<h2>How Much Cheaper Is Pre-Season Sourcing Versus January Rush Reorders?<\/h2>\n<p>The direct answer: in a hypothetical worked example at 10,000 units of a 400 \u00d7 300 \u00d7 250 mm RSC, pre-peak October production typically lands 15-30% below January rush pricing once expediting, air-freight top-ups, and slot premiums are counted. The mechanism is capacity, not material: Q4 box-plant die-cutting and corrugator slots sell out first, and clearance programs that miss the window pay for it in freight class upgrades and 3-5 week lead times.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:16px 0;\">\n<tbody>\n<tr style=\"background:#e2e8f0;\">\n<th style=\"padding:8px;border:1px solid #cbd5e1;\">Cost Driver<\/th>\n<th style=\"padding:8px;border:1px solid #cbd5e1;\">Pre-Peak PO (Oct)<\/th>\n<th style=\"padding:8px;border:1px solid #cbd5e1;\">Rush PO (Jan)<\/th>\n<th style=\"padding:8px;border:1px solid #cbd5e1;\">Governing Standard \/ Test Protocol<\/th>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">Board grade (typical)<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">ECT-32 C-flute<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">Often up-specced to ECT-44 &#8216;to be safe&#8217;<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">TAPPI T811<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">Unit price index (hypothetical, 10k units)<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">1.00<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">1.15\u20131.30<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">\u2014<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">Typical lead time<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">2\u20133 weeks<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">3\u20135 weeks + expedite fees<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">\u2014<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">Compressive validation<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">ASTM D642 full test<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">Often skipped \u2014 risk of field failures<\/td>\n<td style=\"padding:8px;border:1px solid #cbd5e1;\">ASTM D642 \/ ISTA 3A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure class=\"packaging-engineering-diagram\" style=\"margin:26px 0 30px;width:100%;display:block;clear:both;\"><svg viewBox=\"0 0 800 400\" data-diagram-fingerprint=\"66d24af4282b4d4b\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-labelledby=\"diag-title-4 diag-desc-4\" style=\"width:100%;height:auto;aspect-ratio:800\/400;display:block;border-radius:10px;border:1px solid #e2e8f0;background:#ffffff;box-shadow:0 2px 8px -2px rgba(15,23,42,0.06),0 1px 3px rgba(15,23,42,0.04);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;\"><title id=\"diag-title-4\">Winter Holiday Clearance Shipping Box Specification Decision Tree<\/title><desc id=\"diag-desc-4\">How is clearance freight distributed and stacked?: DTC parcel under 20 kg, dry inland warehouse -&gt; ECT-32 single-wall C-flute (4.0 mm), validate ISTA 3A; Die-cut mailer, dimensional-weight-sensitive parcel -&gt; B-flute (3.0 mm) mailer, ECT-32 board minimum; Palletized freight, 5+ tier stacking, coastal humidity hub -&gt; ECT-44 BC double-wall (7.0 mm) with 15-25% stacking derate<\/desc><!-- \u9876\u90e8 Header (\u9632\u91cd\u53e0\u6392\u7248\uff0c\u53f3\u4fa7\u5bf9\u9f50 776) --><rect x=\"0\" y=\"0\" width=\"800\" height=\"44\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1\"><\/rect><circle cx=\"24\" cy=\"22\" r=\"4.5\" fill=\"#6366f1\"><\/circle><text x=\"38\" y=\"27\" font-size=\"14\" font-weight=\"700\" fill=\"#0f172a\">Winter Holiday Clearance Shipping Box Specifica\u2026<\/text><rect x=\"586\" y=\"10\" width=\"190\" height=\"24\" rx=\"4\" fill=\"#eef2ff\" stroke=\"#c7d2fe\" stroke-width=\"1\"><\/rect><text x=\"681\" y=\"26\" font-size=\"11\" font-weight=\"600\" fill=\"#4338ca\" text-anchor=\"middle\">ASTM D642 \u00b7 ISTA 3A<\/text><!-- \u5de6\u4fa7\u6838\u5fc3\u51b3\u7b56\u6839\u8282\u70b9 (\u9ad8\u5bf9\u6bd4\u78b3\u9ed1\u5de5\u4e1a\u57fa\u5ea7) --><rect x=\"24\" y=\"150\" width=\"148\" height=\"72\" rx=\"8\" fill=\"#0f172a\" stroke=\"#1e293b\" stroke-width=\"1.8\"><\/rect><text x=\"98\" y=\"191\" font-size=\"14\" font-weight=\"800\" fill=\"#ffffff\" text-anchor=\"middle\">How is clearance freight distributed and stacked?<\/text><path d=\"M 172,186 C 215,186 215,96 248,96\" fill=\"none\" stroke=\"#94a3b8\" stroke-width=\"1.8\" stroke-dasharray=\"4,2\"><\/path><circle cx=\"248\" cy=\"96\" r=\"3.5\" fill=\"#6366f1\"><\/circle><rect x=\"252\" y=\"74\" width=\"194\" height=\"44\" rx=\"6\" fill=\"#eff6ff\" stroke=\"#93c5fd\" stroke-width=\"1.2\"><\/rect><text x=\"264\" y=\"102\" font-size=\"13\" font-weight=\"700\" fill=\"#1e40af\">DTC parcel under 20 kg, dry inland warehouse<\/text><line x1=\"446\" y1=\"96\" x2=\"480\" y2=\"96\" stroke=\"#6366f1\" stroke-width=\"1.8\"><\/line><polygon points=\"480,96 474,92 474,100\" fill=\"#6366f1\"><\/polygon><rect x=\"480\" y=\"73\" width=\"296\" height=\"46\" rx=\"6\" fill=\"#f0fdf4\" stroke=\"#86efac\" stroke-width=\"1.2\"><\/rect><circle cx=\"496\" cy=\"96\" r=\"4\" fill=\"#16a34a\"><\/circle><text x=\"508\" y=\"102\" font-size=\"13\" font-weight=\"700\" fill=\"#15803d\">ECT-32 single-wall C-flute (4.0 mm), validate ISTA 3A<\/text><path d=\"M 172,186 C 215,186 215,186 248,186\" fill=\"none\" stroke=\"#94a3b8\" stroke-width=\"1.8\" stroke-dasharray=\"4,2\"><\/path><circle cx=\"248\" cy=\"186\" r=\"3.5\" fill=\"#6366f1\"><\/circle><rect x=\"252\" y=\"164\" width=\"194\" height=\"44\" rx=\"6\" fill=\"#eff6ff\" stroke=\"#93c5fd\" stroke-width=\"1.2\"><\/rect><text x=\"264\" y=\"192\" font-size=\"13\" font-weight=\"700\" fill=\"#1e40af\">Die-cut mailer, dimensional-weight-sensitive parcel<\/text><line x1=\"446\" y1=\"186\" x2=\"480\" y2=\"186\" stroke=\"#6366f1\" stroke-width=\"1.8\"><\/line><polygon points=\"480,186 474,182 474,190\" fill=\"#6366f1\"><\/polygon><rect x=\"480\" y=\"163\" width=\"296\" height=\"46\" rx=\"6\" fill=\"#f0fdf4\" stroke=\"#86efac\" stroke-width=\"1.2\"><\/rect><circle cx=\"496\" cy=\"186\" r=\"4\" fill=\"#16a34a\"><\/circle><text x=\"508\" y=\"192\" font-size=\"13\" font-weight=\"700\" fill=\"#15803d\">B-flute (3.0 mm) mailer, ECT-32 board minimum<\/text><path d=\"M 172,186 C 215,186 215,276 248,276\" fill=\"none\" stroke=\"#94a3b8\" stroke-width=\"1.8\" stroke-dasharray=\"4,2\"><\/path><circle cx=\"248\" cy=\"276\" r=\"3.5\" fill=\"#6366f1\"><\/circle><rect x=\"252\" y=\"254\" width=\"194\" height=\"44\" rx=\"6\" fill=\"#eff6ff\" stroke=\"#93c5fd\" stroke-width=\"1.2\"><\/rect><text x=\"264\" y=\"282\" font-size=\"13\" font-weight=\"700\" fill=\"#1e40af\">Palletized freight, 5+ tier stacking, coastal humidity hub<\/text><line x1=\"446\" y1=\"276\" x2=\"480\" y2=\"276\" stroke=\"#6366f1\" stroke-width=\"1.8\"><\/line><polygon points=\"480,276 474,272 474,280\" fill=\"#6366f1\"><\/polygon><rect x=\"480\" y=\"253\" width=\"296\" height=\"46\" rx=\"6\" fill=\"#f0fdf4\" stroke=\"#86efac\" stroke-width=\"1.2\"><\/rect><circle cx=\"496\" cy=\"276\" r=\"4\" fill=\"#16a34a\"><\/circle><text x=\"508\" y=\"282\" font-size=\"13\" font-weight=\"700\" fill=\"#15803d\">ECT-44 BC double-wall (7.0 mm) with 15-25% stacking derate<\/text><rect x=\"0\" y=\"332\" width=\"800\" height=\"68\" fill=\"#f8fafc\" stroke=\"#e2e8f0\" stroke-width=\"1\"><\/rect><circle cx=\"24\" cy=\"354\" r=\"3.5\" fill=\"#6366f1\"><\/circle><text x=\"38\" y=\"358\" font-size=\"12\" font-weight=\"700\" fill=\"#4338ca\">All recommendations assume ASTM D642 compressive validation on production board; apply region\u2026<\/text><text x=\"776\" y=\"358\" font-size=\"11.5\" font-weight=\"500\" fill=\"#94a3b8\" text-anchor=\"end\">Information taken from this article<\/text><\/svg><figcaption style=\"margin-top:8px;font-size:12.5px;color:#64748b;text-align:center;line-height:1.4;\">Figure: Winter Holiday Clearance Shipping Box Specification Decision Tree<\/figcaption><\/figure>\n<p>Use TadaPack&#8217;s free calculators at <a href=\"https:\/\/tadapack.com\/tools\">tadapack.com\/tools<\/a> to model board-down basis weight, ECT-to-BCT derating, and dimensional-weight exposure before committing a clearance MOQ.<\/p>\n<h2>Which Flute Construction Survives Clearance-Season Transit Abuse?<\/h2>\n<p>The direct answer: C-flute (4.0 mm) is the workhorse for boxed parcels, B-flute (3.0 mm) suits die-cut mailers where dimensional weight matters, and BC double-wall (7.0 mm) is mandatory where clearance cartons face multi-tier warehouse stacking or 30-day ocean transit. Clearance freight is uniquely abusive: post-holiday networks run de-rated staffing, parcels sit longer on conveyor surge lines, and return-lane handling is rougher \u2014 a box that barely passes ISTA 3A in November can fail the same sequence in a January return surge.<\/p>\n<p>Under ISTA 3A General Simulation Performance Testing, packaged products up to 68 kg face drop, compression, and random-vibration sequences that should be run on production-representative board \u2014 not white sample boxes. For palletized clearance volumes moving under ASTM D4169 Distribution Cycle 13, specify the appropriate assurance level and validate stacked compression with the seasonal warehouse humidity derate factored in.<\/p>\n<div style=\"margin:18px 0;padding:14px 18px;background:#eff6ff;border-radius:8px;border:1px solid #bfdbfe;\"><strong>\u3010\ud83d\udca1 Packaging Engineer&#8217;s Quick Q&amp;A\u3011<\/strong><\/p>\n<p><strong>Q: Can I down-gauge from ECT-44 double-wall to ECT-32 single-wall to hit a clearance cost target?<\/strong><\/p>\n<p><strong>A:<\/strong> Yes, if \u2014 and only if \u2014 your stacked load derivation confirms it. Work the numbers: a 12 kg carton stacked 5 high with a 4.0 safety factor needs roughly a 240 kg minimum BCT per box; a well-made ECT-32 C-flute RSC at 400 \u00d7 300 \u00d7 250 mm commonly develops BCT in the 250\u2013320 kg range (typical design values), so single-wall can carry it in dry ambient warehouses. In coastal-humidity distribution centers where stacking derating of 15\u201325% applies, the double-wall margin earns its cost back in avoided column crush claims.<\/p>\n<\/div>\n<h2>How Do Moisture and Cold Derate Box Strength During Winter Freight?<\/h2>\n<p>The direct answer: humidity cycling and container sweat can reduce corrugated compression strength by 30-50% versus lab-conditioned values, which is why stacking calculations must apply environmental derating factors rather than ASTM D642 lab numbers alone. Boxes conditioned per ISO 186:2020 (23\u00b0C \u00b1 1\u00b0C, 50% \u00b1 2% RH) will not see those conditions in a January trailer at -10\u00b0C or a Port of Rotterdam container at 85% RH.<\/p>\n<p>For transatlantic and transpacific clearance restock moves, container sweat during 30-day ocean transit softens flute glue lines and liner facings \u2014 watch Cobb 60 water absorption; linerboard exceeding roughly 35 g\/m\u00b2 signals delamination risk on long-haul ocean legs. At inland hubs \u2014 the California Inland Empire (FBA ONT8\/LGB3 corridor), the Texas DFW triangle, and Rotterdam&#8217;s rail\/road multimodal node \u2014 ambient conditions differ enough that a single national stacking spec will either over-engineer one region or under-protect another. Run regional derate scenarios with TadaPack&#8217;s compression and dimensional calculators at <a href=\"https:\/\/tadapack.com\/tools\">tadapack.com\/tools<\/a>.<\/p>\n<h2>How Do You Qualify a Clearance Box Supplier Before the PO \u2014 A 4-Step SOP?<\/h2>\n<p>The direct answer: qualify with a documented four-step verification protocol covering board certification, structural validation, dimensional audit, and regulatory compliance.<\/p>\n<ol>\n<li><strong>Step 1 \u2014 Board certification audit:<\/strong> Require mill certs stating ECT, caliper (\u00b10.15 mm tolerance typical), and basis weight, cross-checked against incoming samples measured with a digital micrometer per TAPPI T411.<\/li>\n<li><strong>Step 2 \u2014 Compression validation:<\/strong> Run ASTM D642 on 10 production cartons; accept only if the mean BCT exceeds your derated stacking requirement by the full safety factor, per your ASTM D4169 distribution-cycle assumption.<\/li>\n<li><strong>Step 3 \u2014 Die registration and dimensional audit:<\/strong> Verify slot depth, flap gap, and print-to-cut registration within \u00b10.15 mm on the die-cut tool; mis-registration over 0.5 mm on RSC flaps is a leading cause of flap pop-open under vibration.<\/li>\n<li><strong>Step 4 \u2014 Compliance screening:<\/strong> Confirm recyclable mono-material board (no PFAS-based barrier coatings on non-essential liners) for EU PPWR (2024\/1991) packaging waste mandates, and substantiate any recyclability claim per FTC Green Guides (16 CFR Part 260).<\/li>\n<\/ol>\n<h2>What Are the Most Common Clearance-Box Field Failures and Their Fixes?<\/h2>\n<p>The direct answer: the two dominant failure modes are column crush on bottom-tier cartons and flap pop-open during return-lane vibration \u2014 both traceable to specifiable root causes.<\/p>\n<p><strong>Failure 1: Bottom-tier column crush in humid warehouses.<\/strong> Root cause is usually ECT loss from moisture uptake, compounded by over-palletized tier counts. Corrective actions: up-spec liner sizing to control Cobb 60 absorption, apply a 15-25% humidity stacking derate in the BCT calculation, and switch bottom layers to BC double-wall where the derate pushes single-wall below its safety factor.<\/p>\n<p><strong>Failure 2: Flap pop-open and seam separation under vibration.<\/strong> Root cause is under-width corrugating glue application or die-slot mis-registration causing gap-induced flap lift under ASTM D4169 random vibration. Corrective actions: audit the glue-lap width (minimum 32 mm on standard RSC geometry), demand water-resistant adhesive for cold-chain lanes, and re-cut the die to \u00b10.15 mm registration. 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dimensional weight to minimize freight costs and avoid FBA size tier penalties.\n<\/div>\n<div style=\"display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:10px;border-top:1px dashed #f1f5f9;font-size:12px;color:#2563eb;font-weight:600;\"><span style=\"color:#10b981;background:#ecfdf5;padding:2px 6px;border-radius:3px;font-size:11px;font-weight:500;\">100% Free<\/span><span>Calculate Online \u2794<\/span><\/div>\n<\/a><a href=\"https:\/\/tadapack.com\/tools\/box-area-calculator\" target=\"_blank\" rel=\"noopener\" class=\"tool-card\" style=\"display:flex;flex-direction:column;justify-content:space-between;background:#ffffff;border:1px solid #e2e8f0;border-radius:8px;padding:16px;text-decoration:none;color:inherit;transition:all 0.2s;\">\n<div><span style=\"display:inline-block;font-size:11px;font-weight:600;color:#2563eb;background:#eff6ff;padding:3px 8px;border-radius:4px;margin-bottom:8px;\">Unboxing Dieline<\/span>\n<h4 style=\"font-size:15px;font-weight:700;color:#1e293b;margin:0 0 6px 0;line-height:1.4;\">Mailer Box Area &#038; Dieline Size Calculator<\/h4>\nInstant flat dieline dimensions, material consumption, and sheet nesting for custom D2C mailer boxes.\n<\/div>\n<div style=\"display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:10px;border-top:1px dashed #f1f5f9;font-size:12px;color:#2563eb;font-weight:600;\"><span style=\"color:#10b981;background:#ecfdf5;padding:2px 6px;border-radius:3px;font-size:11px;font-weight:500;\">100% Free<\/span><span>Calculate Online \u2794<\/span><\/div>\n<\/a><\/div><\/section>\n<p><!-- ========================================= --><br \/>\n<!-- Google & AI GEO Schema.org Structured Data --><br \/>\n<!-- ========================================= --><br \/>\n<br \/>\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Engineering guide to clearance-season corrugated: ECT-32 vs ECT-44, ISTA 3A transit testing, PPWR compliance, stacking derating, plus TadaPack BOM calculators.<\/p>\n","protected":false},"author":1,"featured_media":4417,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-4418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-packaging"],"_links":{"self":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/posts\/4418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/comments?post=4418"}],"version-history":[{"count":0,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/posts\/4418\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/media\/4417"}],"wp:attachment":[{"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/media?parent=4418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/categories?post=4418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tadapack.com\/news\/wp-json\/wp\/v2\/tags?post=4418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}