Hudson Easy Mount Floating Shelves - 3 pk. (36 in./24 in./12 in.) - Small shelves: 12W x 8D x 1.5H in. Medium shelf: 24W x 8D x 1.5H in. Large shelf: 36W x 8D x 1.5H in. Small shelves hold up to 11 lbs; medium shelf holds up to 18 lbs; large shelf holds up to 27 lbs Engineered wood frame with recycled cardboard honeycomb interior