![Master Flow R50ABL Roof Louver, 17-1/2 in L, 17.4 in W, Aluminum, Black [SKU: ORG6581656]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/600x600/products/38861/38417/6581656__40261.1691786444.jpg?c=1 "Master Flow R50ABL Roof Louver, 17-1/2 in L, 17.4 in W, Aluminum, Black [SKU: ORG6581656]")
Product Overview
For attic ventilation, bathroom fan exhausts and kitchen duct outlets. [QTY/UOM: 1EA / 1EA]
![Master Flow R50ABL Roof Louver, 17-1/2 in L, 17.4 in W, Aluminum, Black [SKU: ORG6581656]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/1280x1280/products/38861/38417/6581656__40261.1691786444.jpg?c=1 "Master Flow R50ABL Roof Louver, 17-1/2 in L, 17.4 in W, Aluminum, Black [SKU: ORG6581656]")
![Master Flow SSB960ABL Roof Louver, 18 in L, 20-1/2 in W, Aluminum, Black [SKU: ORG6247621]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/58464/57520/6247621__06253.1692626326.jpg?c=1 "Master Flow SSB960ABL Roof Louver, 18 in L, 20-1/2 in W, Aluminum, Black [SKU: ORG6247621]")
Master Flow
![Master Flow SSB960A Roof Louver, 18 in L, 20-1/2 in W, Aluminum, Mill [SKU: ORG6247613]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/12989/13069/6247613__55244.1691777652.jpg?c=1 "Master Flow SSB960A Roof Louver, 18 in L, 20-1/2 in W, Aluminum, Mill [SKU: ORG6247613]")
Master Flow
![Master Flow SSB960AW Roof Louver, 18 in L, 20-1/2 in W, Aluminum, White [SKU: ORG6247654]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/58467/57523/6247654__21229.1692626328.jpg?c=1 "Master Flow SSB960AW Roof Louver, 18 in L, 20-1/2 in W, Aluminum, White [SKU: ORG6247654]")
Master Flow
![Master Flow SSB960ABR Roof Louver, 18 in L, 20-1/2 in W, Aluminum, Brown [SKU: ORG6247639]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/58465/57521/6247639__41585.1692626327.jpg?c=1 "Master Flow SSB960ABR Roof Louver, 18 in L, 20-1/2 in W, Aluminum, Brown [SKU: ORG6247639]")
Master Flow
![Master Flow IR61BL Roof Louver, 4-1/4 in L, 17-1/2 in W, Resin, Black [SKU: ORG6247712]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/13628/13705/6247712__89676.1691777881.jpg?c=1 "Master Flow IR61BL Roof Louver, 4-1/4 in L, 17-1/2 in W, Resin, Black [SKU: ORG6247712]")
Master Flow