The Miami Tech - SWCD4 - 4" Side Wall Cap with Damper is made of galvanized steel which provides excellent corrosion resistance and longevity.

Product Features:

• Discharge hood area equal or greater than inlet pipe area.
• Flanged base provides for good vent-to-wall contact and an easy caulking surface.
• Long galvanized neck allows for easy union through walls to interior ducts.