This Simpson DuraVent 4 in. Multi-Fuel 90-Degree Elbow Vent features a stainless-steel inner layer that is resistant to potentially corrosive flue gas condensates.

　　- Stainless-steel inner layer is resistant to potentially corrosive flue gas condensates

　　- Galvalume outer layer

　　- Use to offset obstructions

　　- Change the direction of the vent system right or left and horizontally or vertically

　　- Swivel base enables the installer to easily align the vent system to plumb

　　- UL listed for safe installation

　　- Twist-lock connectors for easy installation without mechanical fasteners

　　- Assembled Dimensions: 4 in. W x 8 in. H x 7 in. D

　　- MFG Model # : 33190

　　- MFG Part # : 33190