FLEX HORN, TALKBACK-WHITE COMPACT DESIGN RESISTANT TO HARSH WEATHER FOR AREAS WITH LOW CEILINGS, LOW TO MODERATELY NOISY ENVIRONMENTS, OR ENVIRONMENTS REQUIRING DIRECT SPRAY DOWN GREAT FOR GYMNASIUMS, PRISONS, SUBWAY TRAIN STATIONS, SCHOOLS, DRIVE-THRUS, PARKING GARAGES, MULTI-FLOOR WAREHOUSES, CARWASHES, PROCESSING PLANTS, OPERATING ROOMS, ETC. 4 WAYS TO MOUNT: RECESSED, ADJUSTABLE BRACKET (VC-V-9804 INCLUDED), VANDAL RESISTANT ENCLOSURE (VC-V-9805 NOT INCLUDED), VANDAL RESISTANT FACEPLATE (VC-V-9806 NOT INCLUDED) DIMENSIONS: 6.8”H X 8.3”W X 3.3”D