{"id":99,"date":"2026-06-12T14:22:58","date_gmt":"2026-06-12T14:22:58","guid":{"rendered":"https:\/\/2026.quickfreeze.com\/engineering-guide\/racking\/"},"modified":"2026-06-18T18:50:05","modified_gmt":"2026-06-18T18:50:05","slug":"racking","status":"publish","type":"page","link":"https:\/\/quickfreeze.com\/es\/engineering-guide\/racking\/","title":{"rendered":"Directrices sobre estanter\u00edas"},"content":{"rendered":"<style>\n.qf-eg-eyebrow{display:block;text-transform:uppercase;letter-spacing:.14em;font-size:.85rem;font-weight:700;opacity:.85;margin-bottom:.4rem;}\n.qf-eg-table{width:100%;border-collapse:collapse;font-size:.9rem;margin:1.25rem 0;background:#fff;}\n.qf-eg-table th{background:var(--qf-blue,#005EB8);color:#fff;text-align:left;padding:.55rem .8rem;border:1px solid #c9d4e0;font-weight:600;}\n.qf-eg-table td{padding:.55rem .8rem;border:1px solid #c9d4e0;vertical-align:top;}\n.qf-eg-table tbody tr:nth-child(even){background:#eef2f7;}\n.qf-eg-note{background:#fff8e8;border-left:5px solid #e8a317;padding:1rem 1.25rem;margin:1.5rem 0;border-radius:0 6px 6px 0;}\n.qf-eg-note p{margin:.35rem 0;}\n.qf-eg-faq details{background:#fff;border:1px solid #d9e1ea;border-radius:6px;margin:.6rem 0;padding:.7rem 1rem;}\n.qf-eg-faq summary{font-weight:600;cursor:pointer;color:var(--qf-dark,#101820);}\n.qf-eg-faq details p{margin:.6rem 0 .3rem;}\n.qf-eg-pager{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;}\n.qf-eg-pager a{font-weight:700;color:var(--qf-blue,#005EB8);text-decoration:none;}\n.qf-eg-pager a:hover{text-decoration:underline;}\n<\/style>\n<div class=\"qf-hero\">\n<span class=\"qf-eg-eyebrow\">Engineering Guide &middot; Section 3 of 6<\/span><\/p>\n<h1>Estanter\u00edas<\/h1>\n<p class=\"lead\">QFM rack positions see more turns and traffic than normal storage positions \u2014 spec the rack to the QFM Racking Guidelines and size the openings to your pallets, not to the maximum.<\/p>\n<\/div>\n<div class=\"qf-section\">\n<div class=\"qf-container\">\n<h2>The One Mistake to Avoid<\/h2>\n<p class=\"section-sub\">Opening height is a performance parameter, not just a clearance.<\/p>\n<div class=\"qf-eg-note\">\n<p><strong>Design pitfall \u2014 defaulting to the maximum opening height.<\/strong> Set each opening <strong>6 inches taller than the tallest pallet you will actually freeze<\/strong> \u2014 do not default to the 83-inch maximum. An oversized opening lets blast air bypass over short pallets, and airflow bypass costs freeze performance on every cycle, forever. Example: export chicken pallets at 68&Prime; (with pallet and spacers between each layer) get a 74&Prime; recommended opening. Keep all units in a room at the same height for operational consistency \u2014 one validated multi-room project standardized every opening at 77&Prime;.<\/p>\n<\/div>\n<p>The corollary: collect real pallet heights \u2014 tallest SKU, including the pallet and any spacer sheets \u2014 before the racking design is frozen. If AutoSeal is in scope, the seal tarps are built to the opening height and carry roughly a 3-week lead time, so opening-height data is needed at least 3 weeks before installation.<\/p>\n<\/div>\n<\/div>\n<div class=\"qf-section alt\">\n<div class=\"qf-container\">\n<h2>Racking Specifications<\/h2>\n<p class=\"section-sub\">Minimum and recommended values per QFM Racking Guidelines MKT-200 (V4).<\/p>\n<table class=\"qf-eg-table\">\n<thead>\n<tr>\n<th>Item<\/th>\n<th>Minimum<\/th>\n<th>Recommended<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Capacity per pallet position<\/td>\n<td>2,000 lb<\/td>\n<td>2,500 lb<\/td>\n<\/tr>\n<tr>\n<td>Configuration<\/td>\n<td>2-deep with structural beams<\/td>\n<td>Structural &#8220;Select Rack,&#8221; 2-deep<\/td>\n<\/tr>\n<tr>\n<td>QFM levels<\/td>\n<td>1 high<\/td>\n<td>1&ndash;7 high<\/td>\n<\/tr>\n<tr>\n<td>Opening height<\/td>\n<td>55&Prime; min \/ 83&Prime; max<\/td>\n<td><strong>Tallest blast pallet + 6&Prime;<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Clear bay (between uprights)<\/td>\n<td>96&Prime;<\/td>\n<td>104&Prime; (AutoSeal wants 102&Prime;&ndash;104&Prime;)<\/td>\n<\/tr>\n<tr>\n<td>Beam material<\/td>\n<td><strong>3&Prime; structural (C3) only if no QFM above; otherwise 4&Prime;<\/strong><\/td>\n<td>4&Prime; structural C4 channel<\/td>\n<\/tr>\n<tr>\n<td>Beam above top-level QFM<\/td>\n<td><strong>Required<\/strong><\/td>\n<td>Required<\/td>\n<\/tr>\n<tr>\n<td>Bottom beam<\/td>\n<td>Wedge-anchored to floor, attached to a bottom beam below the lowest QFM, or adapter<\/td>\n<td>Same<\/td>\n<\/tr>\n<tr>\n<td>Pallet supports (BIPS required)<\/td>\n<td>29&Prime; between supports<\/td>\n<td>29&Prime; between supports<\/td>\n<\/tr>\n<tr>\n<td>Upright depth<\/td>\n<td>Rear 36&Prime; \/ front 42&Prime;<\/td>\n<td>Both 42&Prime;<\/td>\n<\/tr>\n<tr>\n<td>Upright material \/ width<\/td>\n<td>Steel<\/td>\n<td>Structural steel, 4&Prime; C4 channel<\/td>\n<\/tr>\n<tr>\n<td>Upright-to-upright (flue)<\/td>\n<td>9&Prime;<\/td>\n<td>9&Prime;<\/td>\n<\/tr>\n<tr>\n<td>Aisle-side reinforcement<\/td>\n<td>&mdash;<\/td>\n<td>Double boxed channel to 96&Prime; from floor; welded bullnose deflector at floor level<\/td>\n<\/tr>\n<tr>\n<td>Height adjustability<\/td>\n<td>&mdash;<\/td>\n<td>1&Prime; vertical adjustability<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Back-to-back depth:<\/strong> the standard double-deep section is 42&Prime; upright + 9&Prime; flue + 42&Prime; upright = <strong>93&Prime; overall<\/strong>. The design intent is the front of the pallet flush with the aisle beam. Get the unit placement on the beam wrong and the pallet hangs nearly 6 inches into the aisle \u2014 a configuration that simply does not work with QFM. A tighter validated alternative exists (7.5&Prime; back-to-back ties with a 40&Prime; rear upright, 92.5&Prime; overall), but treat 93&Prime; as the planning number. Both single-deep selective and double-deep back-to-back placements are acceptable.<\/p>\n<div class=\"qf-eg-note\">\n<p><strong>Design pitfall \u2014 the 96&Prime; bay.<\/strong> 96&Prime; clear bays are the published minimum and the QFMs will fit, but it is an operational issue: blast pallets are usually the least stable and can lean left or right, which makes putaways harder, and maintenance access gets tight. The tightest bay ever fielded was 92&Prime; \u2014 and the operators hated it. Recommend 104&Prime;; hold 102&Prime;&ndash;104&Prime; wherever AutoSeal is planned.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"qf-section\">\n<div class=\"qf-container\">\n<h2>Sample Elevation<\/h2>\n<p class=\"section-sub\">The dimensioned example from MKT-200, page 2 \u2014 a 104&Prime; bay, 62&Prime; loads.<\/p>\n<table class=\"qf-eg-table\">\n<thead>\n<tr>\n<th>Dimension<\/th>\n<th>Value<\/th>\n<th>Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Clear bay<\/td>\n<td>104&Prime;<\/td>\n<td>Two 40&Prime;-wide loads per bay, 7.5&Prime; clearance each side, 9&Prime; between loads<\/td>\n<\/tr>\n<tr>\n<td>Load height<\/td>\n<td>62&Prime;<\/td>\n<td>Pallet + product<\/td>\n<\/tr>\n<tr>\n<td>Lift clearance<\/td>\n<td>6&Prime;<\/td>\n<td>62&Prime; load + 6&Prime; lift = 68&Prime; minimum clear between beams<\/td>\n<\/tr>\n<tr>\n<td>Beam<\/td>\n<td>4&Prime;<\/td>\n<td>C4 structural channel<\/td>\n<\/tr>\n<tr>\n<td>Top-of-beam to top-of-beam<\/td>\n<td><strong>72&Prime;<\/strong><\/td>\n<td>= 62&Prime; load + 6&Prime; lift + 4&Prime; beam<\/td>\n<\/tr>\n<tr>\n<td>First beam top<\/td>\n<td>12&Prime;<\/td>\n<td>Subsequent beam tops at 84&Prime;, 156&Prime;, 228&Prime;, 300&Prime; \u2014 4 levels in a 300&Prime; upright<\/td>\n<\/tr>\n<tr>\n<td>BIPS clear under each position<\/td>\n<td>29&Prime;<\/td>\n<td>Pallet support spacing<\/td>\n<\/tr>\n<tr>\n<td>Section depth<\/td>\n<td>93&Prime;<\/td>\n<td>42&Prime; + 9&Prime; flue + 42&Prime;; 48&Prime; load depth<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"qf-section alt\">\n<div class=\"qf-container\">\n<h2>What the Rack Has to Carry: the QFM Interface<\/h2>\n<p class=\"section-sub\">Unit geometry and mounting, from the QFM Spec Sheet (MKT-199).<\/p>\n<table class=\"qf-eg-table\">\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Unit width<\/td>\n<td>36&Prime;<\/td>\n<\/tr>\n<tr>\n<td>Unit depth<\/td>\n<td>46&Prime; \u2014 front of swing seal to back of fan<\/td>\n<\/tr>\n<tr>\n<td>Top attachment<\/td>\n<td>QFM-009 BAC (Beam Attachment Clamp) block onto the 4&Prime; structural beam above; retractable clamps + bolts<\/td>\n<\/tr>\n<tr>\n<td>Bottom attachment<\/td>\n<td>Straddles the beam below; locking screws both sides (adapter where no bottom beam exists)<\/td>\n<\/tr>\n<tr>\n<td>Sello oscilante<\/td>\n<td>20&Prime; automatic height-adjusting swing seal plus vertical seals<\/td>\n<\/tr>\n<tr>\n<td>Pallet height envelope<\/td>\n<td>Seal fully extended: 57&Prime;&ndash;77&Prime; pallet; fully collapsed: 29&Prime;&ndash;49&Prime; pallet<\/td>\n<\/tr>\n<tr>\n<td>Beam-to-beam height<\/td>\n<td>55&Prime; min, 83&Prime; max &mdash; <strong>with plenum extensions there is no maximum<\/strong>: any beam height, any pallet height<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Plenum extensions are the answer when product runs taller than the standard 77&Prime; pallet maximum \u2014 they remove the beam-to-beam height limitation at additional cost. During installation the crew removes the front beam section, places the unit, and re-installs; this is part of the standard QuickFreeze install scope.<\/p>\n<\/div>\n<\/div>\n<div class=\"qf-section\">\n<div class=\"qf-container\">\n<h2>Documents<\/h2>\n<p class=\"section-sub\">Permanent URLs \u2014 always the current revision.<\/p>\n<div class=\"qf-grid\">\n<div class=\"qf-card\">\n<span class=\"card-tag\">MKT-200<\/span><\/p>\n<h3>Pautas para el almacenamiento de QFM<\/h3>\n<p>The full racking spec for new construction, including the dimensioned sample views reproduced above. Design guide for NEW racking.<\/p>\n<p><a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-200\/\">Ver<\/a> - <a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-200\/download\/\">Descargar<\/a><\/p>\n<\/div>\n<div class=\"qf-card\">\n<span class=\"card-tag\">MKT-296<\/span><\/p>\n<h3>Formulario de estanter\u00edas existentes<\/h3>\n<p>Fill-in measurement form for racking already in the building \u2014 clear heights, beam heights, bay widths, obstructions, photos.<\/p>\n<p><a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-296\/\">Ver<\/a> - <a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-296\/download\/\">Descargar<\/a><\/p>\n<\/div>\n<div class=\"qf-card\">\n<span class=\"card-tag\">MKT-199<\/span><\/p>\n<h3>Ficha t\u00e9cnica de QFM<\/h3>\n<p>Unit dimensions, BAC mounting detail, swing-seal envelope, and plenum-extension note \u2014 the unit side of the rack interface.<\/p>\n<p><a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-199\/\">Ver<\/a> - <a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-199\/download\/\">Descargar<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"qf-section alt\">\n<div class=\"qf-container\">\n<h2>Racking FAQ<\/h2>\n<p class=\"section-sub\">The questions PEs and rack vendors ask most.<\/p>\n<div class=\"qf-eg-faq\">\n<details>\n<summary>Will QFMs work in our existing 96&Prime; bays?<\/summary>\n<p>They fit \u2014 96&Prime; is the published minimum \u2014 but it affects operations: blast pallets lean, putaways get harder, and maintenance access is tight. It has been done, and so has 92&Prime; (the operators hated it). If you are designing new, use 104&Prime;; if AutoSeal is in the plan, hold 102&Prime;&ndash;104&Prime;.<\/p>\n<\/details>\n<details>\n<summary>Our pallets are taller than the 83&Prime; maximum opening. Are we stuck?<\/summary>\n<p>No. Plenum extensions remove the maximum beam-to-beam height limitation entirely \u2014 any beam height, any pallet height \u2014 at additional cost. The 55&Prime; minimum still applies, and the +6&Prime; opening rule still governs: size the opening to the pallet, even with extensions.<\/p>\n<\/details>\n<details>\n<summary>We have roll-formed rack. Do we have to replace it?<\/summary>\n<p>Not automatically, but the guidelines call for structural rack because QFM positions see more turns and traffic than storage positions, and beam strength matters (4&Prime; channel where a QFM mounts above; 3&Prime; C3 only when nothing mounts above). Document what you have on the <a href=\"https:\/\/quickfreeze.com\/es\/docs\/mkt-296\/\">existing-racking form<\/a> with photos, and QuickFreeze engineering will evaluate it position by position \u2014 the formal submittal then states which positions need adapters and which beams need to change.<\/p>\n<\/details>\n<details>\n<summary>When do you need our racking measurements?<\/summary>\n<p>Before the submittal can be produced, and \u2014 if AutoSeal is in scope \u2014 at least 3 weeks before installation, because the seal tarps are built to your opening heights and carry about a 3-week lead time. The field measurement form is a data-collection tool, not a submittal; the submittal that comes back indicates pallet position, adapter requirements with part numbers, and AutoSeal heights.<\/p>\n<\/details>\n<details>\n<summary>Single-deep or double-deep?<\/summary>\n<p>Both are acceptable: single-deep selective and double-deep back-to-back QFM placements are each field-standard. For double-deep, hold the 93&Prime; overall section depth (42&Prime; + 9&Prime; + 42&Prime;) with the front of the pallet flush to the aisle beam \u2014 misplacing the unit on the beam puts the pallet ~6&Prime; into the aisle, which does not work.<\/p>\n<\/details>\n<\/div>\n<div class=\"qf-eg-pager\" style=\"margin-top:2rem;\">\n<a href=\"\/es\/engineering-guide\/multi-level-installation\/\">&larr; Section 2: Floor-Level or Multi-Level<\/a><br \/>\n<a href=\"\/es\/engineering-guide\/power\/\">Section 4: Power &rarr;<\/a>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"qf-section\">\n<div class=\"qf-container\">\n<h2>Planning for AutoSeal<\/h2>\n<p class=\"section-sub\">If <a href=\"\/es\/autoseal\/\">AutoSeal<\/a> is in scope, plan the rack for it from the start &mdash; it drives bay width, opening height, and lead time.<\/p>\n<table class=\"qf-eg-table\">\n<thead>\n<tr>\n<th>Requirement<\/th>\n<th>Detail<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Clear bay width<\/td>\n<td>AutoSeal needs the wider <strong>102&Prime;&ndash;104&Prime;<\/strong> clear bay (between uprights), not the 96&Prime; published minimum. Hold 102&Prime;&ndash;104&Prime; on every bay where AutoSeal is planned.<\/td>\n<\/tr>\n<tr>\n<td>Opening height<\/td>\n<td>The seal tarps are built to the rack opening height (tallest blast pallet + 6&Prime;). Lock opening heights before the seals are ordered, and keep all openings in a room at one height so a single tarp spec covers the room.<\/td>\n<\/tr>\n<tr>\n<td>Lead time<\/td>\n<td>AutoSeal seal tarps carry roughly a <strong>3-week<\/strong> manufacturing lead time, so opening-height data is needed at least 3 weeks before installation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"qf-eg-note\">\n<p><strong>Decide AutoSeal early.<\/strong> Bay width and opening height are far cheaper to get right on the racking drawing than to retrofit later. If AutoSeal is even a possibility, plan the rack to the 102&Prime;&ndash;104&Prime; bay now.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"qf-section dark\">\n<div class=\"qf-container\">\n<h2>Racking Questions? Send the Measurements<\/h2>\n<p class=\"section-sub\">Fill in the existing-racking form, or send your rack drawings \u2014 engineering reviews them position by position.<\/p>\n<div class=\"wp-block-buttons\" style=\"display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"\/es\/contact\/\">Hable con Ingenier\u00eda<\/a><\/div>\n<div class=\"wp-block-button is-style-outline\"><a class=\"wp-block-button__link\" href=\"\/es\/quickfreeze-blast-ready\/\">Request a Blast Ready Review<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Engineering Guide &middot; Section 3 of 6 Racking QFM rack positions see more turns and traffic than normal storage positions \u2014 spec the rack to the QFM Racking Guidelines and size the openings to your pallets, not to the maximum. The One Mistake to Avoid Opening height is a performance parameter, not just a clearance&#8230;.<\/p>","protected":false},"author":0,"featured_media":0,"parent":96,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Racking Design for QFM Blast Freezers | QFM Engineering Guide","_seopress_titles_desc":"QFM racking guidelines: opening height 6 inches above your tallest pallet, bay widths, beam specs, capacities, and the design pitfalls that hurt freeze performance.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-99","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/pages\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":3,"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/pages\/99\/revisions"}],"predecessor-version":[{"id":462,"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/pages\/99\/revisions\/462"}],"up":[{"embeddable":true,"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/pages\/96"}],"wp:attachment":[{"href":"https:\/\/quickfreeze.com\/es\/wp-json\/wp\/v2\/media?parent=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}