18" Antique Brass Decorative Baseboard Register All steel construction with a plated finish Removable faceplate and adjustable damper 4 1/2" height and 2 3/4" base projection Screws not included with purchase Imperial RG4084 18" Antique Brass Decorative Baseboard Register. Crafted for beauty, durability and designed to complement any decor. Metal baseboard vent features an adjustable damper, steel construction and plated finish. 18" length x 4 1/2" height x 2 3/4" base projection.