Fiberglass Utility Supplies, Inc. PATENT No. 4,678,367 U.S.A. and No. 1,281,909 CANADA The DOS-IR Open-Ended Culvert with an attached flare is fastened to the end of a culvert for a professionally finished area. Simply support and surround the pipe and flare with rock. Product Summary DOS-IR Fla...

Fiberglass Utility Supplies, Inc. PATENT No. 4,678,367 U.S.A. and No. 1,281,909 CANADA Designed to be installed on the wall of a concrete pit to block flow. Product Summary Livestock waste pits Finished water storage Storm water separation Fish rearing ponds Storm water detention Spill contai...

Fiberglass Utility Supplies, Inc. PATENT No. 4,678,367 U.S.A. and No. 1,281,909 CANADA The DOS-IR Turn-Out Gate is designed to provide a shut-off on the control end of pipes. It s uses include control of laterals in canal irrigation systems as well as positive control to prevent floodwater enteri...