TREMDrain™ Fittings & Accessories include Corner Guard, Universal Outlet, and Universal Tee. The Corner Guard assists in the flow of water around a backfilled wall's outside corners. Corner Guard may also be used on inside corners. Universal Outlet transfers collected water from TREMDrain or TREMDrain Total Drain at the end of backfilled walls. Universal Tee transfers collected water from TREMDrain, TREMDrain 1000 or TREMDrain Total Drain on blindside walls and can also transer collected water from TREMDrain Total Drain on backfilled walls.