Intake/Exhaust Extension Kit,54 In. H Model Number DV-20E, DV-40E, Opening Height 2 in, Opening Width 3 1/4 in, Opening Depth 2 in, Mounting Type Surface, Vent Direction Vertical, Vent Length 54 in, Vent Diameter 2 in, Vent Size 2 in, Vent Type Intake/Exhaust Extension Kit, Material Rubber, Silicone, Stainless, Outer Diameter 2 in, Pattern Angle 90 Degrees.