Price Match Guarantee Polk Audio 80F/X-RT In-Ceiling 2-Way Round Surround Speakers 8" Woofer (Pair) Vanishing Series In-Ceiling Surround Speakers: The Polk Audio Vanishing Series 80F/X-RT in-ceiling surround speakers feature a precision-engineered, minimally flanged design. Polk's exclusive Sheer-Grille protrudes only 7mm from its surroundings, and installs virtually flush in your ceiling. Mounting the speakers is simple with a one-cut, drop-in installation and the rotating cam stabilizing system. The speakers provide superior high-performance sound from their 8" woofers and dual 0.75" tweeters. There are two speakers, one left and one right, included in the box. Product Highlights: Frequency response 50-25,000 Hz (-3dB) Dual 3/4" silk/polymer dome tweeters 8" Dynamic Balance® woofer Handles up to 100 watts Sensitivity 87 dB 8-ohm impedance Wall distance switch for flexible mounting Paintable Sheer-Grille™ for stealth installation Cutout: 9-3/8" diameter Mounting depth: 4-3/4" Warranty