{"product_id":"12-by-4-inch-surface-duct-grilles-for-20-inch-duct","title":"12 By 4 Inch Surface Duct Grilles For 20 Inch Duct Built To Last From Matte Black Aluminum Durable Metal HVAC Air Vent Cover Made To Order With 2 To 4 Weeks Production Time","description":"\u003cdiv\u003e12x4 Inch Matte Black Surface Duct Grille for 20 Inch Ducts\u003cbr\u003e\n✔️ Made-to-order IER double-deflection grille, adjustable blades  \u003cp\u003eThe IER double-deflection surface grille is a durable HVAC vent cover designed for 12x4 inch openings in 20 inch ducts. This made-to-order grille uses a matte black aluminum finish and is built for residential, commercial, and industrial duct systems, delivering balanced airflow and precise diffusion.\u003c\/p\u003e \u003cp\u003e✅ 12x4 inch opening for 20 inch duct systems\u003cbr\u003e✅ Matte black aluminum finish, made-to-order with 2-4 weeks production time\u003cbr\u003e✅ Individually adjustable blades with optional face-adjustable air scoop\u003cbr\u003e✅ Gasket sealing and counter-sunk screw holes for secure installation\u003cbr\u003e✅ Durable frame for heavy-duty HVAC applications\u003c\/p\u003e \u003cp\u003e💡 What is a duct grille used for in HVAC systems and how does a double-deflection design help?\u003c\/p\u003e\n\u003cp\u003eThis answer highlights the core ideas for common HVAC setups.\u003c\/p\u003e\n- High-precision airflow control with adjustable vertical and horizontal fins\u003cbr\u003e\n- Sealed installation with gasket sealing and secure fastening\u003cbr\u003e\n- Compatible with 12x4 inch openings in 20 inch duct systems✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49129663135979,"sku":"VXB0H576284T","price":132.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51IrHG5IiRL_99ccbd22-85eb-4b85-9b53-5b5565036df4.jpg?v=1785468158","url":"https:\/\/vxb.com\/products\/12-by-4-inch-surface-duct-grilles-for-20-inch-duct","provider":"VXB Bearings","version":"1.0","type":"link"}