Inwalltech M65.1C - 6 1/2" Ceiling Speakers (Pair, White) Resounding, intense, booming bass for that full effect action packed movie from lightweight and stiff gold Apolymer-Cones (Propriety coated polymerized woofer material). Brilliant highs and smooth midranges in an effective diffusion pattern ideal for flat wall/ceiling installations come from pure balanced synthetic silk soft Accutec-Dome tweeters (Propriety designed density polymer chained formula). Easy one-cut, drop-in installation puts built-in audio within reach, with Exact Fit templates and a precision flange that clamps the speaker securely to the drywall. Get a lifetime of reliable sound from the durable, CAD (computer aided design) modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances. Extend your listening area to include your outdoor areas. Rustproof hardware, durable butyl rubber surrounds and powder coated (in-ceiling) & painted steel (in-wall) grilles make ProGold Series speakers suitable for high moisture areas like bathrooms or even under eaves of an enclosed porch. (Exposed outdoor use is not a suitable usage for any InwallTech speaker)