Master Flow 4 In. Fresh Air Vent

Product Description

Master Flow Fresh Air Vents come with a built-in screen to prevent bird entry. They can be used to vent a combustion system or anywhere fresh air intake is needed. Constructed of galvanized steel.Built-in bird screenSturdy galvanized steel constructionAlways seal seams with building code approved sealant or duct tapeInstall with sheet metal screws