Round Back Residential Roof Jack Vent Cap | 4″ Diameter 2″ Tall Collar RBV-4-C2-TP

Active Ventilation Products Round Back Vent product line is excellent at venting attic space, for shingled sloped roofs. The Round Back Vent is made of rust free aluminum with an 4 in. Dia opening, inner vertical cylinder wildlife guard and 9 in. x 9 in. square flange. It has a manufactured 1-piece spun round aluminum vent cap that prevents rain and snow from entering the vent. Its low profile design looks pleasing on shingled roofs.

• Tail pipe fits existing ductwork
• Mill finish aluminum will continually have a long lasting clean appearance
• Built-in inner vertical louver cylinder has a 1/8 in. opening between louver blades that will keep out insects, birds, and animals while allowing air to move through the vent without resistance
• Round design provides for excellent air flow and maximum wind strength
• Pitch capacity: 3/12 to 12/12
• 2 in. clearance between bottom of vent cap and flange
• 1/8th in. opening between the louver blades and all aluminum (non-combustible) material meets the requirements of California building code 706A.2 vents to resist the intrusion of burning embers and flame through ventilation openings
• Helps to reduce energy costs by removing heat in the summer and excess moisture in the winter