Dimensions: 16" W x 14" H x 7" DColor: GrayOutdoor, NEMA 3R DesignNon-metallic polycarbonate enclosure allows you to place transmitters/receivers inside81 cubic foot-per-minute thermostatically controlled fanAir intake and fan exhaust protective shrouds with gasket and hardwareAir filterAll holes pre-cut to install included shrouds, fans, filtersGasketsRemovable hinged doors come with stainless steel latches which are both pad-lockable and screw downOptional Back Panels or DIN Rails fit onto standoffs already existing in the back of the enclosureOptional Back Panel Adjustment Kit allows you to "stack" panels within the enclosureOptional keyed lock availableThe "FC Series" fan-cooled & ventilated NEMA 3R outdoor/indoor enclosures are an inexpensive choice for installation where you need air-flow exchange to ventilate your components mounted within enclosures. However, please keep in mind fan-cooled & ventilated enclosures simply exchange internal air for the external air. Therefore, Fan-Cooled models are not recommended for extreme high-temperature nor extreme low temperature environments. Because these units pull external air into the enclosure through a filtering system, they are listed as NEMA 3R and do not meet the NEMA 4 standards of Mier's air-conditioned and heated models (ACE Series or ACHT Series) which are the safest choice when your components need NEMA 4 type protection from the elements such as moisture, heat, cold, wind, rain, snow, ice, etc., or from wash down conditions.