medium capacity 2 way vent cna

SKU: 157070

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Provides pressure equalization in roof system
Low cost
all-metal breather used for venting all types of insulation
Spun from heavy gauge aluminum
An extra wide base opening and security attached cap
An optional foam insert is available to prevent moisture from condensing on the inside of the standpipe
Simple & easy to install
Unique cap design shields against entry of wind-blown rain or snow
Flange may be coated with asphalt priming or PVC This vent is two way and air will travel in and out. Made in U.S.A. CNA = Cap Not Attached for ease of installation

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