National Hardware Plain Box Rail 12' Size:12' Sweet Spot™ technology opens valve

Sweet Spot™ technology opens valve at -0

Rated capacity 3

Oatey® Sure-Vent® 500 DFU Capacity Air Admittance Valve's one-way valve is designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system

Complies to ASSE Standard 1050 and 1051

National Hardware Plain Box Rail 12' Size:12' Sweet Spot™ technology opens valveNational Hardware's 12' Plain Box Rail is designed for use on doors weighing up to 450 lbs. Made from galvanized steel for durability. Can be used with many types of single and multiple brackets for easy installation. For exterior applications. Coated with Weatherguard Protection to withstand harsh weather conditions and prevent corrosion. Rail is carefully formed to give an even tread to hanger wheels.