Products / GAF Master Flow Roof Jacks with Wagon Cap

Master Flow Roof Jacks with Wagon Cap are GAF's galvanized steel roof jacks for venting appliances and for attic ventilation, with built-in, press-sealed roof flashing and a tapered stack that adapts to roof pitches from 3/12 to 5/12. Models RJWC4 and RJWC7 fit 4 in. and 7 in. pipe diameters on 13 x 13 in. and 15 x 15 in. bases.