PROBLEM TO BE SOLVED: To provide a window breaking protective device installation structure capable of being easily attached and detached from ground without requiring work using a stepladder or high place work.SOLUTION: A window breaking protective device installation structure protects a window W1 of a house from breaking due to lateral pressure of accumulated snow. The window breaking protective device B1 comprises an upper support member 21 that is placed along a wall of the upper side of the window W1, where a lateral direction is a longer direction; a lower support member 31 that is placed along a foundation F of the house or the ground, where a lateral direction is a longer direction; and multiple panels 41 that vertically bridge between the upper support member 21 and the lower support member 31. The upper part of the panel 41 is attached to the upper support member 21. The lower part of the panel 41 is attached to the lower support member 31. The upper part of the panel 41 is attached to the upper support member 21 by hooking a latching projection set on either the panel 41 or the upper support member 21 to a latching hole set on either the panel 41 or the upper support member 21.
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