Watlow Worldwide  |   Site Map  |   Site Search: 

375 Finned Strip Heaters 

Watlow's 375 finned strip heaters are constructed of highly-compacted MgO-based insulation, which conducts heat efficiently from the nickel chromium element wire to the sheath. Two-inch wide (51 mm) aluminized steel fins are attached in a way that maximizes surface contact so heat is transferred into the air faster. Lower sheath temperature and element life are all maximized by this finned construction.

Finned strip heaters com in available lengths from 51⁄2 to 48 in. (140 to 1220 mm). 


Material Maximum Operating Temperatures Maximum Watt Densities
°F °C W/in2 W/cm2
Aluminized steel  1100 595 33 5.1
  • Aluminized steel sheath temperatures to 1100°F (595°C)
  • Watt density up to 33 W/in² (5.1 W/cm²)
  • UL® approved to 240VAC (File No. E52951)
  • CSA approved to 600VAC (File No. LR7392)


  • Enclosure heating
  • Load bank resistors
  • Shrink tunnels
  • Duct heaters
  • Space heaters
  • Drying ovens
  • Incubators
  • Air heating
  • Heat curing
  • Ink drying
  • Food warmers
  • Moisture protection

Features & Benefits:

Features Benefits
Nickel chromium element wire is centered in the heater
  • Heats the strip uniformly
Aluminized steel sheath
  • Operates at higher temperatures
  • Resists corrosion better than iron-sheathed heaters
Optional 430 SS sheath
  • Provides a solution for more corrosive environments
Welded post terminals
  • Produces strong, trouble-free connections

Full Page View     

Related Literature

Specification Sheets (3)

375 Finned Strip .pdf1,056K 
375 High-Temperature Strip Heater .pdf1,315K 
MI Strip .pdf606K 

Brochures (1)

Quality Certificates (2)

Catalogs (3)



Finned Air Heaters
Finned Air Heaters