These round aluminum vents fit in a 4" hole, and are great for reptile rack systems or invertebrate caging. We love them in our tarantula room!

They are made from .020 gauge aluminum, making them thicker and more durable than most other round screen vents. They are easy to install - simply insert into a 4" hole, then fold down the tabs to secure the vent in place.

Dimension in Inches
	A	B	C	D Screen Dia.	E No. Fins	Net Free Area Square Inches	Visual Size Specifications
4	3.980	4.625	0.750	3.875	N/A	7.380