Marathon Ex-Flow Vent White PVC is recommended for PVC membrane and TPO applications. It is available in either one-way or two-way options. One-way nitrile rubber valve prevents moisture from re-entering roofing systems while the two-way option...
Marathon Ex-Flow Vent White PVC is recommended for PVC membrane and TPO applications. It is available in either one-way or two-way options. One-way nitrile rubber valve prevents moisture from re-entering roofing systems while the two-way option...