Author Topic: How big is a Stern Box  (Read 684 times)

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Offline Goingpinsane

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Re: How big is a Stern Box
« on: April 03, 2016, 05:56:11 PM »
If you take the door off a standard 820 door frame the opening between door stops should be 800. Still tight though. Most entry doors and main room doors are 820.