Proficient Audio Systems C850 8" Premium Ceiling Speaker Tested Working | eBay
Black Series R103 10" Reference In-Ceiling Speaker | Outdoor Speaker Depot
Amazon.com: Polk Audio RC80i 2-way Premium In-Ceiling 8" Round Speakers (White, Paintable Grille) & Audio PSW10 10" Powered Subwoofer - Featuring High Current Amp and Low-Pass Filter | Up to 100 Watts :
Amazon.com: Herdio 5.25 Inch 300 Watts Ceiling Speakers Passive Wired, Premium Spring Loaded in Wall Speaker, for Home Theater Living Room Office(2 Speakers) : Electronics
Multipurpose Area Sound System with 2 Premium Ceiling Tile Speakers and Rack Mount Bluetooth Mixer Amplifier– Pure Resonance Audio