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Flex-O-Vent™ Universal Venting Material
Flex-O-Vent is our most economical polyester-based ventilation product. Available in 10’ and 20’ rolls and multiple packaging options, Flex-O-Vent won’t absorb moisture, which can freeze and block all ventilation. It features M63 Marco proprietary adhesive for superior hold, easy one-person installation and a 40-year limited warranty.



