Fintube® Finned Tubular Heaters

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Durable Design

Long service life in hostile environments.

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Energy Efficient

Optimized for efficiency gains across your processes.

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Global Support

Support and spares available around the world.

Fintube® Finned Tubular Heaters

Finstrip® and Fintube® heaters are ideal for OEMs and Users for heating air or gases. Superior to open coil elements, the heating coil is completely encased in a metal sheath. This minimizes a shock hazard due to accidental contact with the heater and makes the heater more rugged. The sheath also makes these elements ideal for applications with vibration.  The Fintube® heater is capable of being formed into various configurations to fit almost anywhere and are often ganged together to form banks of heaters. Both heaters come with an array of mounting options and terminations.

Fintube® elements have a finned tubular design that provides the same benefits as the finned strip heater and additional features, allowing for special bending configurations to provide higher concentrations of installed kW for a given area. The elements can be supplied with bulkhead threaded fittings, and may include optional hermetically sealed terminals, or extra heavy wall thickness for use in atmospheres containing hazardous fumes or gasses. Finned element diameters of 0.315" and 0.475" are standard, with high temperature aluminum painted steel sheath and furnace brazed fins being the most common materials. Stainless Steel or MONEL sheath and fins are also available for corrosive environments.

FTS & FTI - .315" Dia. Fintube® Heaters & 
FTS & FTI - .475" Dia. Fintube® Heaters

The metal sheath isolates and protects the resistor wire from the environment. At the same time it maximizes heat transfer capability to the work. Fintube® elements can be bent to put the heat where it works best.Fins greatly increase surface area and permit faster heat transfer to the air, resulting in lower element surface temperatures. High watt density permits use of fewer elements and a higher concentration of installed kW for a given area.Fintube® heaters are ideal for both comfort and industrial process air applications.

Steel Sheath (type FTS)
MONEL® Sheath (type FTI)


SFTS & SFTI - .315" Dia. Single End Fintube® Heaters & SFTS & SFTI - .475" Dia. Single End Fintube® Heaters

Versatile — Ideal for both comfort and industrial process air applications.

Single-End Terminals simplify wiring and eliminate the need for return wire.

Install More Elements in Same Space as standard, double-end Fintube®.

No Bending required to put all terminals in the same plane.

Smaller Heating Duct or Chamber in some cases.

Steel Sheath (type SFTS)
MONEL® Sheath (type SFTI)

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Every heating challenge is unique. Chromalox offers the industry’s most comprehensive offering of component heaters and controls. Our experienced engineers will work with you to provide a complete thermal solution for your unique application.