High density polyethylene bunk liners eliminate rust. Provides excellent drainage, lets water out while trapping feed inside. This feeder is a solidly welded one piece main frame of tubular steel. It is built strong with the right material to withstand the test of time, weather, and animal abuse. This horse bunk is designed to allow you to feed loose hay and fed at the same time while keeping them both off of the ground and thus eliminating waste. The holes to attach the "V" hay feeder to the top are pre-drilled.