GC 8799 Vent Clamp (attach a 1 1/4" pole on to up to 2 1/4" Vent pipe)
Used to attach a standard TV antenna mast on to a Vent or other pole that is up to about 2 1/4"O.D. thick. Check your pole sizes before you order. this is for a pole that is no more than 2 1/4 in OUTSIDE diameter NOT a pole that is 2 1/4 inch INSIDE diameter.