Niles CM7HD 7" Two-Way LCR Ceiling-Mount Speaker - Each (White) Speaker - Sold Individually - Purchase Two for a Pair.  Interlaced Glass Fiber Cone Is Lightweight Yet Extremely Rigid For Deep, Powerful Bass Response  Butyl Rubber Surround Damps Resonance And Provides Exceptional Durability Integrated Woofer/baffle Design Delivers Greater Low Frequency Response By Employing A 7" Woofer Where Competitive Models Of The Same Outer Size Employ 6 1/2" Woofers 1" Nano-coated IMPACT (Improved Aluminum Ceramic Technology) Dome Tweeter Utilizes A Vapor Deposited Coating To Move Any Ringing Frequencies Outside The Range Of Hearing For Ultra-detailed High Frequencies Proprietary Bridge-mounted Tweeter-adjustment Mechanism Focuses The High Frequency Sound In Any Direction Up To 20 Without Diffraction  3 Position Tweeter Level Control Provides For Precise Matching To Room Acoustics Weather Resistant Construction Reduces Installation Limitations And Provides Unique Solutions In Moist Environments Or Outdoors Under Eaves  Magnetically Attached, Rust-resistant Grille Covers Install Quickly And Provide A Low Profile Look