Plastic Vent Grill Fits 2-1/2″ X 10″ Hole. 3/8″ deep.
Plastic Vent Grill fits 2″ X 4″ hole. For 3/4″ panel or plywood
Round Plastic Vent Grill Fits 4″ Diameter Hole.
Plastic Vent Grill fits 2-7/16″ X 8-3/8″ hole.
Plastic Vent Grill With Screw Holes Fits 2-5/8″ X 8-21/32″ Hole.