The answer provided below assumes that the curtain will be face fitted.
The number of strips will create a curtain slightly wider than the actual door opening to stop draughts creeping around the edges.
If your curtain is to be soffit fitted between jambs (DEAD WIDTH). Please contact us to discuss your needs before ordering.
Strip width 300mm
400mm Strip overlap
Door width
metres (to 3 decimal places)
400mm Strip overlap