STATE ULTRA FORCEWATER HEATER (NATURAL)MODEL# SUF-119-500-NEA 300 SERIAL# 1934116054089 MUST INCLUDED ITEMSBELOW WITH UNIT; 1. CARBON MONOXIDE (CO) MONITOR AGS MINI MERLIN2. SUG-300-500 VENT KIT P/N: ... STATE ULTRA FORCEWATER HEATER (NATURAL)MODEL# SUF-119-500-NEA 300 SERIAL# 1934116054089 MUST INCLUDED ITEMSBELOW WITH UNIT; 1. CARBON MONOXIDE (CO) MONITOR AGS MINI MERLIN2. SUG-300-500 VENT KIT P/N: 100113124 3. PVC COMMON VENT KIT 300-500P/N: 100223775