Measuring for new sealed units without removing them from frame

5 Mar 2008
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United Kingdom
Hi All,

I want to replace some of my sealed units as the spacer bar has bowed up intot he viewable area. I have measured the sealed units as 28mm thickness. I can also measure the opening where the beading fits into. How much smaller (or larger) should the sealed unit be than the opening the beading fits into? I don't particularly want to remove each piece of glass to measure it.

Any help appreciated.
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Assuming you do know that opening or bead line then you deduct 10mm for both width and height, if I had the facility on my mobile I'd draw you an arrow
Or measure the visible face edges of the spacer bars and add 25mm height and width

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