Standard Valance: We supply your valance exactly the width of the wood blind plus 10mm.
If the "Recess" option has been selected, then the valance will be the "width" - (12mm to allow for brackets etc.) + 10mm (to cover the brackets and fixings).
Mitred Returns: We supply your valance plus 2 sides that have been cut to fit either side of the blind headrail. You'll generally order mitred returns for an Outside fixing and/or sash windows so you can hide the sides of the wood blind brackets.
Uncut Valance: We supply 2 mitred returns and a valance that is over long. You can cut to size for a perfect fit. You'll generally order an uncut valance where 2 or more wood blinds meet, to provide a continuous valance.