Like the originals, the exterior door hinges on top and hides the mounting screws, motor and fan blade when not in use.
It is slightly larger than the original and will require a 9-1/2"w x 9-1/4"h cutout in the trailer wall.
The overall exterior dimensions including the hinge are 11-5/8" square and protrudes 5/8".
The interior dimensions are 11" square and protrudes 1-5/8".
Because it is designed to go through walls no less than 2" thick, you may have to build a 1/2" deep collar or shim on the interior if you have 1-1/2" thick walls, like on Airstreams. Instead of building a collar, some customers have modfiied the fan housing itself to make it shallower. Using either method, the unit will look very nice when finished.
The fan motor is 110vac only.
Choose from either a mill finish aluminum exterior with a metallic silver-painted steel interior, a mill finish aluminum exterior with a white painted steel interior, or a white painted aluminum exterior and white painted steel interior.