This Through Wall Discharge Utility Fan from Broan has a built-in switch so there’s no wall switch to wire. Designed for rooms up to 180 square feet the fan mounts inside the wall and is easy to assemble and install. The rugged steel housing on the outer weather hood has a modern profile and is protected with a long-lasting electrically bonded epoxy coating that can be painted to match outdoor decor. The built-in backdraft damper keeps drafts out. A washable aluminum filter is available separately.