The Zerostart Circulation Heater 3300018 has a 1/4 inch NPT drain and a 3° tapered, permanent-mold aluminum housing. This model comes with a Thermostat Range A: 80°F ON - 100°F OFF (27°C ON - 38°C OFF) 

FEATURES:

• Low Watt-Density (replaceable) heating elements (60-105 w/inch2) for long life
• 205°F (96°C) overheat thermostat
• NRTL/C approval (complies with UL/CSA)
• Thermally isolated regulating thermostat (models with t-stat)
• Four-bolt flange for easy element replacement
• 14 gauge SJOW cord (16 in. length - 40.6cm) is abrasion, oil, and grease resistant
• Nylon check valve 
• Premium grade tin-plated phosphor bronze blade connections
• 1 inch NPT inlet and outlet

PRODUCT SPECIFICATIONS:

• Part No.: 3300018
• Watt: 3000
• Volt: 240
• Amps: 12.5
• Plug Configuration: (B) - 240 Volt 15 amp. Furnished with standard 240V male plug.