JBL MTC-14WG Grilles for Control 10 Series Ceiling Speakers (Pair, Black)The pair of MTC 14WG High Humidity Accessory Grilles from JBL allows the Control 10 Series 12C T and 14C T Ceiling Speakers to be used in environments with high humidity. The aluminum alloy material does not rust and the durable powder coated finish prevents pitting that could otherwise occur with raw unfinished aluminum. The polyester finish matches the look of the speaker. The grille installs in place of the one that comes with the speaker and can