Water Heater; Model ST-42; LP Gas; With Direct Spark Ignition; On-Demand/ Tankless; 42,000 BTU; 12-1/2 Inch Height x 12-3/4 Inch Width x 13 Inch Depth; 19 Pounds Without Door; Non Portable; With Built-In Freeze Protection Mechanism/ Flame Out Protection/ Scald Protection/ Voltage Protection/ Automatic Fan Monitoring/ Pressure Relief Safety Valve/ Child Lock; With On Demand Control Center; Access Door Sold Separately