Fiberglass Square Tube Grey 3.00″ Square x 1/4″ Wall x 7 Ft Length, ISOFR,
ISOFR Fiberglass Square Tubing 3″ x 3″ x 7′. Can be used for weather resistant/water resistant applications. Can also be used in fire retardant application of a construction project. Has the ability to be nonconductive to electricity.