x 7 in.. Industrial grade self-adhesive protects against bacteria or moisture trapping behind the pipe marker., comes with four markers per card and fit pipe diameter 3/4 in.
The propellers are fiberglass-reinforced polypropylene. These easy-to-install exhaust fans come fully assembled with a fiberglass automatic shutter and frame with stainless steel hardware for superior resistance to corrosive gases and vapors. Requires a 17 square opening.