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Door Rough Opening Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Формула

Водич корак по корак

1. 1Add framing clearance to door dimensions for rough opening
2. 2Apply the formula using your project measurements
3. 3Add required safety factors or waste allowances per code

Worked Examples

Common Mistakes to Avoid

• ✕Not applying code-required safety factors or derating
• ✕Forgetting to account for waste and cut losses in material estimates