Galvanized steel makes for easy clean up and resists corrosion. Assembled dimensions are 39" x 19" x 24". Dimensions inside the brooder are 37" x 17-1/2" x 9-1/2".
Use a heat lamp or heat plate (12" x 12" or smaller.) This brooder will start up to 30 chicks* but they will need moved to a larger enclosure once they become too cramped for space.
*30 chicks when using a heat lamp. 20 chicks when using a heat plate.