Air Vent Automatic w/Built In Shut Off 3/4 & 1/2"NPT 150 psi Max Brass
Filter Media CollaPSIble Merv 11 Replaces Space-Gard Aprilaire 2200
Static Pressure Control 0.1 to 4.0 In wc W/Fixed Differential
Filter Media CollaPSIble Merv 11 Opens to 20X25