I have a 1960's steel siding. They work, but not all along the side seam. Photo #1 shows how my siding has nails in various places along the seam where the seam is too narrow to insert. However, there are many places where these nails are not present, so there is enough space to insert. The sign in photo #2 weighs approximately 4 pounds. Overall I am happy with the performance of the product and that it matched my siding.
25Lbs Heavy Duty Neodymium Magnetic Hooks, 15Pcs Cruise Essentials Hanging Magnets For Refrigerator, Kitchen, Home & Workplace By MIKEDE
31 Review
MHDMAG Heavy Duty Neodymium Magnetic Coat Hooks, Rare Earth Magnet Hangers For Home, Office, Workplace Or Traveling. Pack Of 2 In Black.
28 Review
MHDMAG Magnetic Hooks 80LBS Magnet Hooks With Neodymium Rare Earth Magnet For BBQ, Hanging, Holder,Keys, Storage, Door, Office, Grill, Cruise Ship Accessories, Black,Pack Of 5
36 Review
MHDMAG Magnetic Hooks Refrigerator,Cruise Ship Accessories, 80LBS Super Magnets With Neodymium Rare Earth For Hanging, Door Holder, Keys, Home, Office, Refrigerators, BBQ, Pack Of 5
30 Review