UPC PROFLEX FERNCO CLAMP SHIELDED COUPLING Will couple anything from 3-1/8" up to 3-3/8" round. This is a 4 band shielded clamp with a rubber inner sleeve it is 3 inches tall . 3-1/4 fits perfect it is tight on 3-3/8 OD.
Please check the size of what you are coupling to make sure this will work.
Each additional clamp purchased at the same time ships for 1.00 more each.