Command Large Black Picture Hanging Strips 17206BLK 4sets. One consumer pack containing four matched sets of large black interlocking picture-hanging strips, model 17206BLK. Each set is a pair of strips. Follow the exact package diagrams and load limits for the intended frame and surface. Directions: Use isopropyl alcohol to clean the wall; avoid household cleaners. Click two strips together for each set, remove liners and attach as shown on the pack. Press the frame against the wall for 30 seconds. Peel it down from its lower corners, then press each wall strip for another 30 seconds. Reattach after one hour. For removal, peel the frame down, then stretch each strip downward along the wall for at least 38cm; never pull toward yourself. Follow the pack diagrams and load limits. Warnings: Incorrect application or removal can cause damage or injury. Avoid wallpaper, positions above beds, valuables, irreplaceable items and clocks. Do not hang objects thicker than 2 inches. Use indoors at 10-40C. Adhesion may be poor on vinyl. Wait 28 days after painting. Remove the frame rear stands and hanging fittings so it sits flush; do not apply strips to paper or soft parts of the frame.