Code 3 SlickStik model types The HS20 provides (4) 50 watt flashing halogen devices in a 20" length housing. The H30 provides (4) 50 watt flashing halogen devices in a 30" length housing. The HS30 provide (2) outboard 50 watt 70° intersection lights and (2) 50 watt flashing halogen devices in a 30" length housing. The HSS30 provides (2) outboard 50 watt 70° intersection lights and (2) DeckBlaster strobe units in a 30" length housing. The HS37 provides (2) outboard 50 watt 70° intersection lights and (5) 27 watt halogen devices which provide all ArrowStik type signals, including left out, right out, center out and wig-wag flashing lights. All of this is available in a 37" length housing. The HSS37 provides (2) outboard 50 watt 70° intersection lights, (2) DeckBlaster strobe units and (2) 50 watt flashing halogen devices in a 37" length housing.