{"product_id":"four-inch-square-plenum-box-with-air-tight-knockou","title":"Four Inch Square Plenum Box With Air Tight Knockouts, 2-1\/8 Inch Deep, Gray, UL Listed, 30.3 Cu In Capacity, Eleven 1\/2 Inch And Five 3\/4 Inch Knockouts, Drawn","description":"\u003cdiv\u003eSingle 4-In Square Plenum Box with Air-Tight Knockouts\u003cbr\u003e\n✔️ 4 in square, 2-1\/8 in deep, gray, UL listed, 30.3 cu in, 11 x 1\/2 in \u0026amp; 5 x 3\/4 in knockouts \u003cp\u003eThis four-inch square plenum box is designed for mounting in walls or ceilings where air flow must be contained. It features drawn steel construction, air-tight knockouts, a gray finish, and UL listing for safety and code compliance.\u003c\/p\u003e ✅ Drawn steel construction for clean wiring paths\u003cbr\u003e\n✅ UL Listed for safety and code compliance\u003cbr\u003e\n✅ 30.3 cu in capacity for splices and devices\u003cbr\u003e\n✅ Eleven 1\/2 in knockouts and five 3\/4 in knockouts\u003cbr\u003e\n✅ Air-tight knockouts for plenum use\u003cbr\u003e\n✅ Gray finish matches common installations\u003cbr\u003e \u003cp\u003e💡 What is a plenum-rated square electrical box used for in HVAC or electrical installations?\u003c\/p\u003e\nUsed in return air paths, these boxes seal wiring and prevent leaks or contamination in air-handling spaces.\n- Handy for ceiling or wall runs with air-path needs\n- Helps meet building codes by sealing knockouts against air flow\n- Compatible with standard 1\/2 in and 3\/4 in knockouts\n- UL-listed for safety and reliability\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48226310914283,"sku":"VXB003A2GWX4","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/71H8vQ99LoL.jpg?v=1778820443","url":"https:\/\/vxb.com\/products\/four-inch-square-plenum-box-with-air-tight-knockou","provider":"VXB Bearings","version":"1.0","type":"link"}