Active Ventilation Products solar powered attic fan product line， the Round Back Solar Fan， is excellent at exhausting attic spaces for shingled roofs. The solar panel provides energy to the fan on sunny days to increase the vent's CFM over and beyond a standard non-motorized static vent. The Round Back Solar Fan is made of rust free aluminum， 8 in. Dia exhaust fan with a 2 in. collar height and 13 in. x 13 in. square flange. Its low profile design looks pleasing on shingled roofs. The Round Back Solar Fan has a solid vent cap with an inner vertical louver cylinder to keep out insects， birds and animals. The inner vertical louver allows air to exhaust without resistance. Model RBSF-8-BL is powder coated with an electrostatic charge in black finish. The powder coating finish adheres extremely well and is more difficult to remove than wet paint which adds to the vents durability and long lasting clean appearance.

Excellent choice to removing radiant heat from attic spaces

Black powder coating finish is significantly greater at resisting scratching， chipping and oxidation

Solar panel: 5-Watt， 12-Volt

Ventilation rule 1:300， application per sq. ft.: 200 sq. ft.

Net free air space: 50 sq. in.

2 in. clearance between bottom of vent cap and flange

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

Inner cylinder louver design does not allow accumulation of particle buildup as found in using an insect screen

1/8th inch opening between the louver blades and all aluminum ("noncombustible") material meets the requirements of California building code 706A.2 Vents to resist the intrusion of burning embers and flame through ventilation openings

365 CFM at 0.1 SP

Helps to reduce energy costs