Rough Opening Dimensions
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(The origin point is the upper left corner.)
Click any square in the grid for a single-page summary
of the rough opening required for various IBP products.
Note: All IBP products require 8" Trimline
or Thinline series glass block:
actual dimension 7 3/4" X 7 3/4" X 3 1/8".
Nail/screw flange on all 4 sides, similar to standard windows.
Flush mount on all 4 sides, so that unit can be installed flush or recessed in opening. Attaches to structure through perimeter portion prior to installing glass blocks.
Similar to standard curb mount skylights.