Flat frame or inlet-bell frame design for improved efficiency.
Available in 24-, 36-, 48- and 52-inch (610, 914, 1219 and 1321 mm) sizes and in white or gray.
Louvers' flexible edge helps seal the fan's opening when fan is at rest.
Corrosion-proof vinyl construction with a rigid vinyl frame and fiberglass rod hinges for the louvers.
Louvers are easy to replace and have a smooth, easy-care finish for low maintenance.
Seals winter weather out.
Easy-in and easy-out operation.
Black color gives good visibility.