Hard-to-find sidewall register/diffuser (not baseboard) with a single flap/valve. This register fits a hole size of 14" x 6" and has an actual size of 15 3/4" x 7 3/4" with 5/16” lip for flush mounting to the wall. Replace your old, painted over, single-flap register with this brand new model and maintain the vintage look throughout your home. Made in the USA. See the Product Info. Sheet image to see if the sizes are right for you.