If the duct is a standard size, remove the register and drop the fan into the boot. Secure it to the floor on each side with screws. If the duct is smaller than standard, see photos below. Plug the ...

PAY ATTENTION: Flexible duct must be properly installed to perform as intended. Attention to detail will make or break the duct system. July 2, 2018 In order to understand the foundational principles ...