Bogen CSD2X2L Drop-In Low-Impedance Ceiling Speaker (Off White)Priced individually, but sold in pairs. Bogen's CSD2X2L(U) Drop In Ceiling Speakers are 8 ohm, full range speakers that allow for fast and easy installation, which saves installation time, effort, and cost. The CSD2X2L(U) is a 2' x 2' speaker that fits perfectly into place in 2' x 2' ceiling grids without needing to cut ceiling tiles or requiring the use of tile support rails. The CSD2X2L(U) can also be easily installed in 2' x 4' ceiling grids just