{"product_id":"4-inch-roof-vent-cap-with-backdraft-damper-for-bat","title":"4 Inch Roof Vent Cap With Backdraft Damper For Bathroom Ventilation System Galvanized Steel Exhaust Vent In Black Durable Roof Vent For Superior Airflow Corrosion Protection No Hassle Easy Install","description":"\u003cdiv\u003e4 Inch Black Roof Vent Cap with Backdraft Damper\u003cbr\u003e\n✔️ Galvanized steel build offers 75 percent airflow plus mesh guard \u003cp\u003eThis 4 inch roof vent cap works as an exhaust point in bathroom ventilation setups to keep air moving outward from homes and similar buildings.\u003c\/p\u003e ✅ Galvanized steel body with powder coating fights corrosion\u003cbr\u003e\n✅ Backdraft damper helps block reverse airflow\u003cbr\u003e\n✅ Includes 120mm by 90mm mesh cover with 3mm gaps\u003cbr\u003e\n✅ Pipe extension fits under flange for duct hookup\u003cbr\u003e\n✅ Four mounting holes secure it to roof jacks or walls\u003cbr\u003e \u003cp\u003e💡 What is a roof vent cap used for in ventilation systems?\nRoof vent caps direct air out of indoor spaces while stopping unwanted backflow.\n- They pair with exhaust fans to push moist air from baths and laundry areas\n- The damper design cuts energy loss by limiting cold air entry\n- Mesh screens keep pests from getting inside ducts or attics\n- Install options let users mount them on roofs or side walls for flexible setups\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48682524868843,"sku":"VXB0BNMNH618","price":88.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61bOcaFtduL.jpg?v=1780404629","url":"https:\/\/vxb.com\/products\/4-inch-roof-vent-cap-with-backdraft-damper-for-bat","provider":"VXB Bearings","version":"1.0","type":"link"}