Command 20 lb XL Heavy Duty Picture Hanging Strips, 16 Pairs (32 Command Strips) Damage-Free Hanging Picture Hangers, Heavy Duty Wall Mounting Strips for Home Decor, Black Adhesive Strips About this item Sold in packs of 16 pairs. CONTENTS - 16 pairs of extra-large black Command Heavy Duty Picture Hanging Strips (32 strips total); 4 XL strips hold 20 pounds. Maximum frame size 24" x 36". DAMAGE-FREE DECORATING - Decorate your walls without damaging them. No nail holes, no sticky residue, no peeling paint. 3M Command Heavy Duty Picture Hanging Strips are easy to use and keep your walls looking beautiful. NO TOOLS REQUIRED - Hang your heavy-duty frames, large wall art, large mirrors, wall clocks, signs, whiteboards, holiday decorations, acoustic foam boards, and other home decor wherever you want without nails or hammers. STRONG AND VERSATILE - Command Strips adhere strongly to a variety of indoor surfaces, including painted walls, painted concrete block, and concrete surfaces. (3)