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612.4 Window Opening Limiting Devices
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Where provided , window opening limiting devices shall comply with the provisions of this section.
Window opening limiting devices shall be self acting and shall be positioned to prohibit the free passage of a 4-in. (102-mm) diameter rigid sphere through the window opening when the window opening limiting device is installed in accordance with the manufacturer's instructions.
Window opening limiting devices shall be designed with release mechanisms to allow for emergency escape through the window opening without the need for keys, tools or special knowledge. Window opening limiting devices shall comply with all of the following:
- Release of the window opening-limiting device shall require no more than 15 pounds (66 N) of force.
- The window opening limiting device release mechanism shall operate properly in all types of weather.
- Window opening limiting devices shall have their release mechanisms clearly identified for proper use in an emergency.
- The window opening limiting device shall not reduce the minimum net clear opening area of the window unit below what is required by Section 310.1.1 of the code.
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