Image: M-Boss Inc. Aluminum Ceiling Panel with Mill Finish -- 24 3/8 in. x 24 3/8 in. (Nail-up) Sizes -- Available in 11 Finishes

M-Boss Inc. Aluminum Ceiling Panel with Mill Finish -- 24 3/8 in. x 24 3/8 in. (Nail-up) Sizes -- Available in 11 Finishes