![Master Flow RT65BL Roof Louver, 18-1/2 in L, 18 in W, Resin, Black [SKU: ORG6247696]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/600x600/products/34457/33127/6247696__48495.1683068827.jpg?c=1 "Master Flow RT65BL Roof Louver, 18-1/2 in L, 18 in W, Resin, Black [SKU: ORG6247696]")
![Master Flow RT65BL Roof Louver, 18-1/2 in L, 18 in W, Resin, Black [SKU: ORG6247696]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/1280x1280/products/34457/33127/6247696__48495.1683068827.jpg?c=1 "Master Flow RT65BL Roof Louver, 18-1/2 in L, 18 in W, Resin, Black [SKU: ORG6247696]")
Product Overview
Scratch, dent and crush-resistant high-impact resin plastic. 10 in x 10 in opening, 17-5/16 in x 16-13/16 in flashing. 50 sq-in of net-free ventilating area. CSA listed. [QTY/UOM: 1EA / 1EA] [PMS SKU: ] [Category: VENTILATION PRODUCTS/ROOF VENTILATORS;Shop All]
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![Master Flow IR65BL Roof Louver, 5.88 in L, 18 in W, Resin, Black [SKU: ORG1306562]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34351/33021/1306562__04586.1683068769.jpg?c=1 "Master Flow IR65BL Roof Louver, 5.88 in L, 18 in W, Resin, Black [SKU: ORG1306562]")
![Master Flow IR65G Roof Louver, 5.88 in L, 18 in W, Resin, Gray [SKU: ORG7955313]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/34354/33024/7955313__91376.1683068771.jpg?c=1 "Master Flow IR65G Roof Louver, 5.88 in L, 18 in W, Resin, Gray [SKU: ORG7955313]")