{"product_id":"copy-of-trigon-sports-5-row-21-supreme-series-bleacher","title":"Bleacher 4 Row 21' Supreme Series - BL421SP","description":"\u003ch2 style=\"text-align: left;\"\u003eBleacher 4 Row 21' Supreme Series - BL421SP\u003c\/h2\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003csection data-view=\"Product.Information\"\u003e\n\u003cdiv class=\"product-details-information-content\"\u003e\n\u003cdiv class=\"product-details-information-content-container\"\u003e\n\u003cdiv role=\"tabpanel\"\u003e\n\u003cdiv class=\"product-details-information-tab-content\" data-type=\"information-content\" data-action=\"tab-content\"\u003e\n\u003cdiv itemprop=\"description\" role=\"tabpanel\" class=\"product-details-information-tab-content-panel active\" id=\"product-details-information-tab-0\" data-action=\"pushable\" data-id=\"product-details-information-0\" data-pusher=\"sc-pushable-xs\"\u003e\n\u003cdiv id=\"product-details-information-tab-content-container-0\" class=\"product-details-information-tab-content-container\" data-type=\"information-content-text\"\u003e\n\u003cul\u003e\n\u003cli\u003e4, 5, 8, 10, and 15 Row Units\u003c\/li\u003e\n\u003cli\u003e8\" Rise\/24\" Tread\u003c\/li\u003e\n\u003cli\u003e10\" Seat Plank\u003c\/li\u003e\n\u003cli\u003e17” Front Row Seat Height\u003c\/li\u003e\n\u003cli\u003eAvailable in 21', 27', and 33' Lengths\u003c\/li\u003e\n\u003cli\u003eAluminum Frame\u003c\/li\u003e\n\u003cli\u003eDouble Footboards and Risers on All Rows\u003c\/li\u003e\n\u003cli\u003eChain Link Guardrail\u003c\/li\u003e\n\u003cli\u003eAisle With Handrails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:58f686c4-834e-4887-8546-b869ddd7f6fa-13\" data-testid=\"conversation-turn-28\" data-scroll-anchor=\"true\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"77e2114c-9ee1-45d5-824b-cb83f6d2747c\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cul data-start=\"27\" data-end=\"1318\" data-is-only-node=\"\" data-is-last-node=\"\"\u003e\n\u003cli data-section-id=\"1mnx0fs\" data-start=\"27\" data-end=\"234\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"70\"\u003eIdeal mid‑to‑large spectator capacity\u003c\/strong\u003e\u003cbr data-start=\"70\" data-end=\"73\"\u003eThe 4‑Row, 21′ Supreme Series comfortably seats around \u003cstrong data-start=\"130\" data-end=\"148\"\u003e52+ spectators\u003c\/strong\u003e, making it a strong choice for school fields, parks, and multi‑use athletic venues.\u003c\/li\u003e\n\u003cli data-section-id=\"1t9cv4u\" data-start=\"236\" data-end=\"435\"\u003e\n\u003cstrong data-start=\"238\" data-end=\"277\"\u003eComfort‑engineered viewing geometry\u003c\/strong\u003e\u003cbr data-start=\"277\" data-end=\"280\"\u003eWith \u003cstrong data-start=\"287\" data-end=\"320\"\u003e8″ rise and 24″ tread per row\u003c\/strong\u003e and \u003cstrong data-start=\"325\" data-end=\"353\"\u003e10″ non‑skid seat planks\u003c\/strong\u003e, this model delivers \u003cem data-start=\"375\" data-end=\"417\"\u003eclear sightlines and comfortable spacing\u003c\/em\u003e for spectators.\u003c\/li\u003e\n\u003cli data-section-id=\"1537d1n\" data-start=\"437\" data-end=\"633\"\u003e\n\u003cstrong data-start=\"439\" data-end=\"471\"\u003eRobust aluminum construction\u003c\/strong\u003e\u003cbr data-start=\"471\" data-end=\"474\"\u003eRust‑resistant, all‑aluminum materials ensure \u003cem data-start=\"522\" data-end=\"580\"\u003elong‑lasting outdoor durability with minimal maintenance\u003c\/em\u003e—a cost‑wise choice for seasonal or year‑round use.\u003c\/li\u003e\n\u003cli data-section-id=\"1pro2xk\" data-start=\"635\" data-end=\"796\"\u003e\n\u003cstrong data-start=\"637\" data-end=\"665\"\u003eEnhanced safety features\u003c\/strong\u003e\u003cbr data-start=\"665\" data-end=\"668\"\u003eGuardrails and handrails help guide traffic and meet many facility code expectations, particularly for raised seating areas.\u003c\/li\u003e\n\u003cli data-section-id=\"1g2vyih\" data-start=\"798\" data-end=\"960\"\u003e\n\u003cstrong data-start=\"800\" data-end=\"836\"\u003eStable structure for regular use\u003c\/strong\u003e\u003cbr data-start=\"836\" data-end=\"839\"\u003eReinforced framing and double footboards on all rows increase stability under varied crowd loads and frequent events.\u003c\/li\u003e\n\u003cli data-section-id=\"1ucme0j\" data-start=\"962\" data-end=\"1117\"\u003e\n\u003cstrong data-start=\"964\" data-end=\"1001\"\u003eLow maintenance, high reliability\u003c\/strong\u003e\u003cbr data-start=\"1001\" data-end=\"1004\"\u003eTextured aluminum seats resist wear and are easy to clean, reducing upkeep time over the bleacher’s lifespan.\u003c\/li\u003e\n\u003cli data-section-id=\"hzef3q\" data-start=\"1119\" data-end=\"1318\" data-is-last-node=\"\"\u003e\n\u003cstrong data-start=\"1121\" data-end=\"1139\"\u003eExpert verdict\u003c\/strong\u003e\u003cbr data-start=\"1139\" data-end=\"1142\"\u003eA \u003cstrong data-start=\"1146\" data-end=\"1185\"\u003epremium, balanced bleacher solution\u003c\/strong\u003e combining \u003cem data-start=\"1196\" data-end=\"1239\"\u003ecomfort, safety, durability, and capacity\u003c\/em\u003e—perfect for venues needing dependable seating that performs event after event.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"109\" data-end=\"349\"\u003e\u003cstrong data-start=\"109\" data-end=\"160\"\u003eQ: What is the BL421SP Supreme Series Bleacher?\u003c\/strong\u003e\u003cbr data-start=\"160\" data-end=\"163\"\u003eA: A premium 4-row, 21-foot aluminum bleacher designed for schools, sports fields, and recreation venues, offering professional-grade durability, comfort, and long-lasting performance.\u003c\/p\u003e\n\u003cp data-start=\"351\" data-end=\"460\"\u003e\u003cstrong data-start=\"351\" data-end=\"390\"\u003eQ: How many spectators can it seat?\u003c\/strong\u003e\u003cbr data-start=\"390\" data-end=\"393\"\u003eA: Seats approximately 50–55 people comfortably across four rows.\u003c\/p\u003e\n\u003cp data-start=\"462\" data-end=\"651\"\u003e\u003cstrong data-start=\"462\" data-end=\"512\"\u003eQ: What makes it part of the “Supreme Series”?\u003c\/strong\u003e\u003cbr data-start=\"512\" data-end=\"515\"\u003eA: Features reinforced aluminum framing, wide non-slip seat planks, and optional double footboards for enhanced stability and comfort.\u003c\/p\u003e\n\u003cp data-start=\"653\" data-end=\"791\"\u003e\u003cstrong data-start=\"653\" data-end=\"691\"\u003eQ: Is it suitable for outdoor use?\u003c\/strong\u003e\u003cbr data-start=\"691\" data-end=\"694\"\u003eA: Yes, corrosion-resistant aluminum construction ensures durability in all weather conditions.\u003c\/p\u003e\n\u003cp data-start=\"793\" data-end=\"931\"\u003e\u003cstrong data-start=\"793\" data-end=\"829\"\u003eQ: What are the safety features?\u003c\/strong\u003e\u003cbr data-start=\"829\" data-end=\"832\"\u003eA: Includes non-slip seat surfaces, sturdy bracing, and smooth end caps for spectator protection.\u003c\/p\u003e\n\u003cp data-start=\"933\" data-end=\"1097\"\u003e\u003cstrong data-start=\"933\" data-end=\"983\"\u003eQ: What are the dimensions and specifications?\u003c\/strong\u003e\u003cbr data-start=\"983\" data-end=\"986\"\u003eA: 21 feet long, approximately 5 feet high, with 12–15” tread depth per row for safe and comfortable seating.\u003c\/p\u003e\n\u003cp data-start=\"1099\" data-end=\"1210\"\u003e\u003cstrong data-start=\"1099\" data-end=\"1127\"\u003eQ: Is assembly required?\u003c\/strong\u003e\u003cbr data-start=\"1127\" data-end=\"1130\"\u003eA: Yes, assembly is required; instructions are included for easy installation.\u003c\/p\u003e\n\u003cp data-start=\"1212\" data-end=\"1370\"\u003e\u003cstrong data-start=\"1212\" data-end=\"1252\"\u003eQ: Where is this bleacher best used?\u003c\/strong\u003e\u003cbr data-start=\"1252\" data-end=\"1255\"\u003eA: Ideal for school gyms, athletic fields, parks, and mid-size venues needing professional, high-quality seating.\u003c\/p\u003e\n\u003cp data-start=\"1372\" data-end=\"1553\"\u003e\u003cstrong data-start=\"1372\" data-end=\"1406\"\u003eQ: What are the main benefits?\u003c\/strong\u003e\u003cbr data-start=\"1406\" data-end=\"1409\"\u003eA: Reinforced aluminum construction, low maintenance, corrosion resistance, and professional comfort make it a top choice for mid-size venues.\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"18g9rgt\" data-start=\"70\" data-end=\"205\"\u003e\n\u003cstrong data-start=\"72\" data-end=\"92\"\u003eClean regularly:\u003c\/strong\u003e Wipe aluminum seats, footboards, and risers with mild soap and water to maintain finish and non-skid surfaces.\u003c\/li\u003e\n\u003cli data-section-id=\"vj3wh\" data-start=\"206\" data-end=\"323\"\u003e\n\u003cstrong data-start=\"208\" data-end=\"237\"\u003eInspect frame \u0026amp; hardware:\u003c\/strong\u003e Check bolts, braces, and welds for looseness or wear; tighten or replace as needed.\u003c\/li\u003e\n\u003cli data-section-id=\"1533i9k\" data-start=\"324\" data-end=\"451\"\u003e\n\u003cstrong data-start=\"326\" data-end=\"356\"\u003eCheck planks \u0026amp; footboards:\u003c\/strong\u003e Ensure all seat boards and footboards are secure, straight, and free from cracks or bending.\u003c\/li\u003e\n\u003cli data-section-id=\"8b5tvw\" data-start=\"452\" data-end=\"565\"\u003e\n\u003cstrong data-start=\"454\" data-end=\"487\"\u003eGuardrails \u0026amp; safety features:\u003c\/strong\u003e Confirm end caps, edges, and guardrails (if present) are intact and secure.\u003c\/li\u003e\n\u003cli data-section-id=\"utuzg6\" data-start=\"566\" data-end=\"679\"\u003e\n\u003cstrong data-start=\"568\" data-end=\"590\"\u003ePrevent corrosion:\u003c\/strong\u003e Rinse periodically, especially for outdoor or humid environments, to reduce oxidation.\u003c\/li\u003e\n\u003cli data-section-id=\"1y5b4d9\" data-start=\"680\" data-end=\"778\"\u003e\n\u003cstrong data-start=\"682\" data-end=\"702\"\u003eLevel placement:\u003c\/strong\u003e Install on stable, even ground to avoid tipping hazards and frame stress.\u003c\/li\u003e\n\u003cli data-section-id=\"lwsq6n\" data-start=\"779\" data-end=\"859\"\u003e\n\u003cstrong data-start=\"781\" data-end=\"809\"\u003eHigh-traffic inspection:\u003c\/strong\u003e Monitor heavily used areas for wear or fatigue.\u003c\/li\u003e\n\u003cli data-section-id=\"ndf1z7\" data-start=\"860\" data-end=\"955\"\u003e\n\u003cstrong data-start=\"862\" data-end=\"882\"\u003eSeasonal audits:\u003c\/strong\u003e Conduct full safety inspections before sports seasons or major events.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Bleacher","offers":[{"title":"Default Title","offer_id":43530517577802,"sku":"BL421SP","price":8285.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/2387\/2074\/files\/trigon-sports-4-row-21feet-supreme-series-bleacher.jpg?v=1776778906","url":"https:\/\/wen0d6-q0.myshopify.com\/es\/products\/copy-of-trigon-sports-5-row-21-supreme-series-bleacher","provider":"Power Gear for Every Journey","version":"1.0","type":"link"}