Designed to lift all drinkers and feeders up out of litter in chick brooder pens. More hygenic. Much less work to keep clean. Made of heavy plastic. 2.75"H x 21"W Center support cutout diameter: 6.5" Designed to lift waterers and feeders up and out of litter to provide a cleaner location around high traffic feeding/watering areas. Made of heavy plastic and measures 2.75"H x 21"W