Builders Edge 140016774001 Hooded Vent 4", White N/A Excellent water retention

Excellent water retention

inches and 1/16ths on both sides and both edges

Air release valve (non-adjustable)

4 "AA" alkaline batteries

Floor box kits are used to complete floor box installation on either carpet

Builders Edge 140016774001 Hooded Vent 4", White N/A Excellent water retentionHighlights: Classic design and function for venting air through side walls Durable, maintenance free, U. V. stabilized and constructed with color Molded through so they won't scratch, flake or fade Built in concealed exhaust flap stays closed when not in use Net free area 12 sq. inches Locking positions: 0. 75", 1" and 1. 25" Fitted with 4" exhaust pipe and pipe length 8" Animal guards and wire screen sold separately Limited Lifetime warranty by