STCS-6 | 6" Passive 2-way In-Ceiling / In-Wall Speakers, White (Pair) – Sound Town
Amazon.com: Pyle 4 Inch Dual Marine Speakers - Waterproof and Weather Resistant Outdoor Audio Stereo Sound System with Polypropylene Cone, Cloth Surround and Low Profile Design - 1 Pair - PLMR41B (Black) : Electronics
Pyle Marine Speakers - 5.25 Inch 2 Way Waterproof and Weather Resistant Outdoor Audio Stereo Sound System with 240 Watt Power and Low Profile Slim Style - 1 Pair - PLMRS5W (White) - Newegg.com
JBL SLP12/T (White) 3" low-profile commercial on-wall speakers at Crutchfield
kicker 47ksc404 ks series low profile 4 inch 4 ohm 15 to 75 watts rms power factory replacement coaxial car audio sound system speakers (pair) - Newegg.com
Best Low Profile Speakers for Cars
Low-Profile Speakers for the Audiophile in Challenging Space? - HomeTheaterHifi.com
kicker 47ksc41004 ks series low profile 4x10 inch 4 ohm 15 to 75 watts rms power factory replacement coaxial car audio sound system speakers (pair) - Newegg.com