LED tube Tri-Proof(water, dust and corrosion) light fixtures for exterior applications such as decks and deck rails. 316SS end caps and polycarbonate cover. Due to the water tightness can be installed on the roughest areas on deck. Overload, over-voltage, over-temperature and short circuit protection. 3 versions: STANDARD with 2 glands, 3H BATTERY EMERGENCY with 3 glands, and 20-30V EMERGENCY CIRCUIT with 3 glands. On evry version glands are M25 fast connecting cable glands. SS316 installation brackets are included.