StripsMAXIMUM FRAME SIZE 24 X 36 INCHES: One package includes 14 pairs (28 strips total) of the Command Large Picture Hanging Strips; four wall adhesive strip pairs hold 16 pounds; maximum frame of 24 x 36 inchesWORKS ON A VARIETY OF SMOOTH SURFACES: Wall hanging strips work on a variety of smooth surfaces, including painted walls, finished wood, painted concrete cinder blocks, laminate, glass, metal and tilesSURFACE PREP: Clean the desired surface with rubbing alcohol to remove grime and dust to allow the no damage wall hangers to bond to the surface; the indoor temperature must be between 5 degrees Fahrenheit and 15 degrees FahrenheitUSAGE TIPS: Wait seven days after painting before using the Command Picture Hangers to allow paint to cure; do not hang over beds or on wallpaper; do not use the wall hanging strips to hang valuable items