DEZ Furnishings QBMO580640 Corded 2 inch Premium Vinyl Blind, Mocha, 58W x 64L This blind is exact measurement. Please consider Mounting allowances for an Inside Mount. Example if you order 20W x 48L, We'll ship 20W x 48L Blinds can be installed Inside or Outside the window frame For Inside Mount: Consider allowances of 1/4" - 1/2" on the overall width for mounting hardware For Outside Mount: Order the width to cover the overall open area to avoid light filtering through the sides "Cord Operating" Blind, consider cordless products for Child and Pet Safety