What is the Floor hole size for the Chick Brooder 9.5" (CB25), Chick Brooder 15" (CB40) & the Grow Out 9.5" (GL25)? Katrina B. | Hatching Time December 02, 2021 19:16 3/8" X 3/8" Related articles Can a brooder (CB) be used as a grow out pen (GL)? Can a grow out pen (GL) be used as a brooder (CB)? Can the Roll Out nest box be converted to a back collection box? What is the floor hole size for the Grow Out 15" (GL40)? What flooring can be used for Jumbo Quail? Is the ABS Comfortplast Plastic BPA Free? Comments 0 comments Please sign in to leave a comment.