Master Flow IR61BL Roof Louver, 4-1/4 in L, 17-1/2 in W, Resin, Black

Just 2 in H for better appearance. Injection-molded, high-impact resin construction for long life. Colors complement most roofs. Pre-drilled nail holes make installation easier. 11-3/4 in x 9-3/4 in opening, 18-1/2 in x 17-1/2 in flashing, 4-1/4 in H, 37 sq-in of net-free ventilating area.

• An excellent choice against weather infiltration, especially in steep-slope applications
• With UV inhibitors to maintain consistent color
• Fewer vents needed for installation
• 12% larger flashing with pre-drilled nail holes makes installation easier, helps prevent leaks
• Helps deter bird and rodent infiltration prevents clogging from leaves and pine needles
• Hood is securely snapped in place (rather than tacked) to reduce chance of blow-off
• Features super low profile

• Catalog https://assets.unilogcorp.com/187/ITEM/DOC/Master_Flow_100002958_Catalog.pdf
• Specification Sheet https://assets.unilogcorp.com/187/ITEM/DOC/Master_Flow_100005674_Specification_Sheet.pdf