EZ Plenum EZSWC4 4"-Inch Side Wall Cap with Swivel Lock Backdraft Damper, Removable Screen, 26GA Galvanized Steel

EZ Plenum's 4"-inch heavy duty galvanized steel side wall exterior wall caps are the preferred & ideal choice for exhaust air ventilation and outside fresh air ventilation intake wall caps. FEATURES: Swivel lock backdraft damper (1st of it's kind) Removable metal screen 26GA galvanized steel Uniquely designed for contractors Outer Flange: 3/4"-inch Length: 10-1/2"-inches Diameter: 4"-inch