Economical 6 inch wall vent cap. Available with either a damper or screen. See pictures below. The damper is suitable for any vent with an outflow. The damper discourages air inflow. The screen version is suitable for exhaust or intake for any vent with clean airflow. Screen keeps critters out. Choose "damper" or "screen" from popup menu below.
Sheet metal comes with protective film. Hint: to peel off, first score plastic at edges with knife.
Dimensions: 8" high x 8" wide x 4-1/8" projection x 5" long pipe.