Window Opening Control Devices (WOCD) work with Single and Double Hung Tilting & non-tilting Window Systems.
These devices are required for use in all windows as specified in the 2012 International Building Code (IBC) & the 2012 International Residential Code (IRC).
This product has been extensively tested by an independent laboratory and exceeds the ASTM F2090 requirements. These devices are designed to be installed by replacing already installed vent stops.
Sold in Pairs with FREE shipping