EZ 70 Vent Pipe Mount for 2.50" to 3.75" Vents - (1" to 1.25" Mast Bracket) HIGH QUALITY VENT MOUNT FOR MOUNTING ANTENNA & MAST ON VENT PIPE ATTACHES TO STURDY VENT PIPES FROM 2-1/2" TO 3-3/4" OD BRACKET ACCEPTS ANTENNA MASTS 1" TO 1-1/4" OD (MAST NOT INCLUDED) WILL STAND OFF VENT 5"-6" MADE OF 12 GAUGE, 1-1/4" WIDE GALVANIZED MATERIAL