PRODUCT DESCRIPTION

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