HiFi Works 30003 HFW8 8-Inch In-Wall Speakers, White (Pair) Perfect in-wall speakers for a medium- to large-sized room Eight-inch black polypropylene subwoofer One-inch cloth dome tweeter with a Ferrofluid cooled voice coil Easy installation with the patented Flex-bar system Measures 8.6 x 12.06 x 2.9 inches (W x D x H)