Protectoseal In-Line Conservation Aluminum Breather Vent, Model 8743. Series 8740. 3” diameter pipe size, 4 hole flange. Standard Max Pressure 9.50 OZ./IN.², 16.44 In./WC, 4.09 kPa. Standard Max Vacuum 1.0 OZ./IN.², 1.73 In./WC, .43 kPa. Overall size 14” x 8” x 21”
Vent Size: 3"