THIS PRODUCT HAS BEEN DISCONTINUED. THE INFORMATION ON THIS PAGE MAY NO LONGER BE ACCURATE.

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Manufacturer's Product Description

One Way or Two Way
• Available in high-density polyethylene (black) for BUR and modified bitumen applications or U.V. stabilized PVC (white) for PVC membrane and polyurethane foam applications
• Locking, vandal-proof cap prevents entry of wind-blown rain or snow
• Inexpensive, simple & easy to install

One Way - Special one-way nitrile rubber valve prevents moisture from re-entering roofing system

Activity with EX-FLOW - 1 WAY