Measurement Guide

Overall Height
15" [38.09cm]
Diameter of
Opening
4" [10.16cm]
Flange Width
9" x 9" [22.86cm]
Height of Collar
11" [27.94cm]
Height of Head
4" [10.15cm]
Head Width
7 1/4" [18.42cm]
Height of Louvers 2 1/2" [6.34cm]
Opening of louvers 1/8" [0.30cm]
seamless spun cap
Flashing
2 1/2" [6.35cm]
Flashing
2 1/2" [6.35cm]
Keepa Vent: Model KV-4-C11
4" Diameter with 11" Collar and Square Flange
All aluminum construction ( Thickness = 0.025" )
Active Ventilation Products, Inc.
311 First Street, Newburgh, NY 12550-4857
800-ROOF VENT (766-3836) Ph: 845-565-7770 Fax: [phone]
Website: roofvents.com Email: [e-mail]
5778-11
Net free area
square inches [cm]
square foot [meters]
12 [30.48] 0.09 [0.027]
Application per. sq. ft. [meters]
1/150 1/300
26 [7.92] 52 [15.85]