These liners fit the No. 0528 and 0534 brooders and provide a cushioned liner as well as firm footing for newly hatched chicks. These liners are 2-ply heavy paper. The top ply has been treated with a mild germicide to control bacteria and suppress odors. Highly recommended, these disposable tray liners make for a quick and easy clean up in the No. 0528 and 0534 brooders. Liner size 30” X 36.50”. 100 Liners Per Pack.