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Apr 19, 2021 - 03:04 AM
The Specialty Recreation SL1818W Square Flat-Top Pyramid Dome RV Skylight 18" x 18" - White has an overall flange size of 21.5" x 21.5". ( Bubble height of about : 3.5") It fits a cut out of 18" x 18".
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Apr 19, 2021 - 03:04 AM
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