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Door Trim
Calculate door casing/trim length
🚪Calculator
📐 How We Calculate
The door trim calculator uses the following formula:
Perimeter per Door = 2 × Height + Width
Total Length = Perimeter × Number of Doors
Trim Strips = ⌈Total Length / 2.5m per strip⌉
Standard Trim: Door trim pieces typically come in 2.5m lengths.
Coverage: Each door requires trim on both sides and top (3 sides total).