The easy way to measure for the correct spacer for your RV windows is:
How to Choose Your Spacer Size (1/4" vs. 3/16")
Don't guess on the size! Two easy ways to measure!
Grab a standard ruler and look closely at the edge of your fogged window.
- Find the Air Space Between the Glass
- Look right at the edge of your double-pane glass. You are measuring the empty air space between the inside piece of glass and the outside piece of glass.
- 1/4 inch gap is about the thickness of 3 quarters stacked together. Order the 1/4" Kit and spacer
- 3/16 inch gap (slightly narrower, about the thickness of 2 quarters stacked together) Order the 3/16" Kit and spacer.
- Or use a 1/4" drill bit. If the smooth end fits snugly between the panes of glass, you need the 1/4" seal kit.
If the 1/4" bit will not fit, you need the 3/16" seal kit.
- Calculate How Much to Buy: Measure completely around the outside edges of the windowpane. (Top + Bottom + Left Side + Right Side).
Each kit includes 10 feet of seal.
One kit has one ten-foot section of our custom engineered spacer seal. If your total measurement is over 10 feet (like a massive living room picture window), you will need to order additional spacer material.
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