They hold through glass! simply place a magnet on each side of the glass, then hang the sign or decoration. Can be used with single pane windows or as single hooks on metal doors. If used on a metal surface, each hook will hold up to 35 lb protective coating helps prevent scratching. Recommended use for single-pane windows only.
|Weight Capacity||:||35 lb|
|Number of Hooks||:||2|
|Dimensions||:||10 in L x 7.8 in W x 8.7 in H|