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The sturdy MDF (medium density fiberboard) case is covered with a durable, easy-to-clean vinyl film and offers both white and black designs. The front panel is made of ABS material and is covered with fine color matching speakers. The front baffle has a certain Angle tilt, which can improve the high frequency playback effect in the listening area. The speaker can be with or without a volume control. All Bosch speakers are certified to meet IEC 268-5 power handling capacity (PHC) standards and can operate continuously for 100 hours at rated power. Bosch has also conducted simulated acoustic feedback exposure tests to ensure they can withstand twice the rated power in a short period of time. This ensures high reliability in extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the chance of failure or performance degradation. Security in accordance with EN 60065 standard installation/configuration pane after three keyhole users can simply and quickly wall Ann LB1 ? UW06 ? D speaker speaker, 6 W, the front covered with fine weave cloth MDF enclosure, black coating layer, have used for three keyhole wall installation. Order number LB1 UW06 - D LB1 ? UW06V ? D speaker, with volume control with the volume control box, 6 W, the front covered with fine weave cloth MDF enclosure, black coating, with three keyhole for wall installation. Lb1-uw06v-d lb1-uw06v-d lb1-uw066-l speaker box, 6w, front cover MDF shell with exquisite woven cloth, white coating, with 3 key holes for wall installation. Order number LB1 - UW06 - L