The PTFE Jacked Three, Six and Nine Element Vertical Style Tubular Element Series is an Over-the-Side Parallel to tank heater designed to offer superior performance utilizing 10 watts per square inch (1.5w/cm²) of heating capacity.
The Quartz Single Tube Bayonet Series is an Over-the-Side Vertical heater designed to offer superior performance utilizing 25 watts per square inch (4w/cm2) of heating capacity.