This is an 11 inch whole house fan with a damper and an 8 ft long duct and a grille for your ceiling and shipping included.

This is a unique Invisco invention that is pending a patent. It uses a very common ceiling mounted whole house fan but is modified to be mounted up high...

This is a 16 inch whole house fan with a damper and an 8 ft long duct and a grille for your ceiling and a dial for speed control and a standard shipping...

This is an 18 inch whole house fan with a damper and an 8 ft long duct and a grille for your ceiling and a dial for speed control and a standard shipping...

This is a unique Invisco invention that is pending a patent. It uses a very common ceiling mounted whole house fan but is modified to be mounted up high...

This is a 20 inch whole house fan with a damper and an 8 ft long duct and a grille for your ceiling and a dial for speed control and a standard shipping...

PLEASE NOTE THAT THE PICTURE DOES NOT SHOW THE COLLECTOR BOX. The box has 8 18 inch duct collars - 2 on each side of the 4 foot by 20 inch box under the...

This is a 30 inch whole house fan that starts with the noisy ceiling mounted fan and is improved by the addition of a collector box that enables multiple...

This is a 36 inch whole house fan that mounts in your attic so you can't see it and you barely hear it. It starts with the noisy ceiling mounted fan and...

This is designed to be mounted in your roof using a standard sheet metal flashing and waterproof caulking so that the center of it is at the roof top level...

This is the most powerful rooftop mounted whole house fan one can buy. QuietCool has one but it pulls much less air. The reason is they use a box for a...