Rough opening for 24, 28, 30, 32, 34 & 36 inch door - Civil Sir

The rough opening (RO) for a 36-inch (36×80 inches) door is need to be 38-inches wide by 82 1/2 inches tall (38×82 1/2 inches). These dimension are enough for the RO to adjust the door and frame.

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Doors: Measuring Rough Openings - Builders Surplus

Rough Opening Sizes for Commercial Door Frames

Rough opening for a 30, 28, 24, 32 & 36 pocket door - Civil Sir

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