Polk Audio RC6s In-Ceiling Stereo Speaker (Single, White) A single in-ceiling speaker Equipped with one Dual Voice Coil 6.5-inch dynamic-balance, mineral filled polymer-composite cone with a rubber surround for durability Frequency Response: 40Hz - 20kHz Equipped with dual 0.75-inch dynamic-balance, metalized soft dome Constructed of durable, moisture-resistant materials for use in bathrooms, saunas, or under outdoor eaves A single in-ceiling/ in-wall speakers with a round shape and flush design Equipped with one 6.5-inch dynamic-balance, mineral filled polymer-composite cone with a rubber surround for long life Frequency Response: 40Hz - 20kHz Equipped with dual 0.75-inch dynamic-balance, metalized soft dome tweeters Constructed of durable, moisture-resistant materials for use in bathrooms, saunas, or under outdoor eaves