Ports without mounting flange for when the port will be protruded out of the box and only fastened to the pipe, these are 3d printed from PETG and made heavy duty, available in 3,4,6,8 and 10″ sizes, fits all schedule 40 pvc pipe and can be bonded with pvc cement, weld-on #3,#4 and #16 Sizes 3,4,6 and 8″ are a 1 piece design, 10″ is a modular assembled design

THESE ARE NOT FOR PLUMBING, THESE ARE FOR SPEAKER BOXES.

MADE IN THE U.S.A.