{"product_id":"plenum-box-with-turning-vanes","title":"Plenum Box with Turning Vanes","description":"\u003cp data-start=\"113\" data-end=\"309\"\u003eEngineered for performance and built for durability, our \u003cstrong data-start=\"170\" data-end=\"220\"\u003eductboard plenum with integrated fiberglass turning vanes\u003c\/strong\u003e is designed to improve airflow efficiency and reduce turbulence at critical transitions.\u003c\/p\u003e\n\u003cp data-start=\"311\" data-end=\"655\"\u003eEach plenum is fabricated from high-quality fiberglass ductboard with a reinforced foil exterior and precision-sealed seams for long-lasting performance. The internal \u003cstrong data-start=\"478\" data-end=\"495\"\u003eturning vanes\u003c\/strong\u003e help guide airflow smoothly through the box, minimizing pressure loss and improving system efficiency—especially in tight turns and high-velocity applications.\u003c\/p\u003e\n\u003cp data-start=\"657\" data-end=\"674\"\u003e\u003cstrong data-start=\"657\" data-end=\"674\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"675\" data-end=\"944\"\u003e\n\u003cli data-section-id=\"3x300z\" data-start=\"675\" data-end=\"727\"\u003eIntegrated \u003cstrong data-start=\"688\" data-end=\"705\"\u003eturning vanes\u003c\/strong\u003e for optimized airflow\u003c\/li\u003e\n\u003cli data-section-id=\"tpkk97\" data-start=\"728\" data-end=\"773\"\u003eReduces turbulence and static pressure loss\u003c\/li\u003e\n\u003cli data-section-id=\"1l4ww8k\" data-start=\"774\" data-end=\"824\"\u003eFabricated from premium \u003cstrong data-start=\"800\" data-end=\"824\"\u003efoil-faced ductboard\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"j6bfpl\" data-start=\"825\" data-end=\"886\"\u003eFully sealed seams for durability and air-tight performance\u003c\/li\u003e\n\u003cli data-section-id=\"dvtst8\" data-start=\"887\" data-end=\"944\"\u003eCustom sizes available to fit your project requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"946\" data-end=\"960\"\u003e\u003cstrong data-start=\"946\" data-end=\"960\"\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"961\" data-end=\"1113\"\u003e\n\u003cli data-section-id=\"wco0\" data-start=\"961\" data-end=\"998\"\u003eAir handler supply\/return plenums\u003c\/li\u003e\n\u003cli data-section-id=\"1eq6807\" data-start=\"999\" data-end=\"1042\"\u003eCommercial and residential HVAC systems\u003c\/li\u003e\n\u003cli data-section-id=\"177bbs2\" data-start=\"1043\" data-end=\"1113\"\u003eHigh-performance duct layouts requiring smooth airflow transitions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice shown covers sizes up to 20x30x48\"\u003c\/p\u003e\n\u003cp data-start=\"1115\" data-end=\"1195\"\u003eBuilt to save time in the field and deliver consistent results on every install.\u003c\/p\u003e","brand":"Top-Air Ductboard Fabrication","offers":[{"title":"Default Title","offer_id":48931135095026,"sku":null,"price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/4173\/3362\/files\/ChatGPTImageMar29_2026_03_39_43PM.png?v=1774813527","url":"https:\/\/topairfl.com\/products\/plenum-box-with-turning-vanes","provider":"Top-Air Ductboard Fabrication","version":"1.0","type":"link"}