Marvin Window Opening Control Device

Crank-out Ultimate Casement and Double Hung are available with an optional window opening control device. This device limits window openings to 4” or less when engaged and can be disengaged for maximum opening. It automatically reengages when window is closed.





See all Installation Instructions for Marvin Products.
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In the 1950s, demand for Marvin products expands to new geographic area, requiri...

In the 1950s, demand for Marvin products expands to new geographic area, requiring a delivery fleet. This semi truck was used to deliver windows. #TBT http://bit.ly/1iZAEiA

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