Dimension5.4x3.5cm High strength and corrosion resistance, surface passivation color or polished , to choose from. Widely used in restaurants, hotels, shops, commercial buildings, storage , garage, garment factories. Sprinklers assembled from copper alloy frame, glass balls and with compact shape and delicate appearance. Fire sprinkler is a key component part of automatic fire extinguishing system .It aims to detect fire and control or extinguish the fire through sprinkler.