Finstrip® Air Heater

OTF
Finstrip® Air Heater
  • Rust-Resisting Iron or Chrome Steel Sheath
  • 250 - 4,150 Watts
  • 120 and 240 Volt
  • Single Phase
  • 225 - 565°F Max. Work Temp.
  • 1-1/2" Strip with Fins 2" Wide
  • Third-party certifications: UL Recognized, CSA, DVE

  • Mount across Air Stream within Forced Air Ducts
  • Use in Dryers, Ovens and other Process Air Heating Equipment
  • Comfort Heating in Ducts, Load Banks and Humidity Controls
  • Many Air Blast and Convection requirements can be accommodated by the wide range of lengths, wattages and watt densities available.

Selection Guidelines

Maximum Work Temperatures — Finstrip® elements can generally be used in the applications above, at maximum temperatures, without exceeding their capability, if properly installed according to instructions packed with heater.

Air Velocity (ft/sec.) Max. Outlet Air Temp. (°F)
Iron Sheath Chrome Steel Sheath
Free Air 225 315
16 460 565

Note - Maximum temperatures are based on 15 W/In2 density for iron sheath and 20 W/In2 density for chrome steel sheath. If elements have a lower watt density, work temperature may be increased; if watt density is higher, work temperature should be lower.

See Allowable Watt Density & Finstrip® Heater Selection Graphs G-107S and G-108S in the Technical section of this catalog.

Durability is assured by rugged Chromalox strip heater with locked-on aluminized steel fins.

Rapid Heat Transfer to air from large finned area.

Large Selection of lengths, wattages and watt densities.

Options

Secondary Insulation Bushings are needed at each end of Finstrip® elements when connected in series on line voltages 300V and above. To accommodate bushings, a 17/32 x 11/16" mounting hole in tabs should be specified for elements. A secondary bushing set (PCN 255716) should be specified. Each set includes two bushings and hardware for one heater.

Removable Terminal Covers (OT-AC-1) — Shipped unassembled (PCN 129242).

Ceramic Post Terminal Insulators — Nickel plated steel hardware (PCN 259805). Stainless Steel hardware (PCN 255732).

Extra Long Finstrips — Available in 48, 54, 64 or 72" length.

MONEL® Sheath and Fins — Contact your Local Chromalox Sales office for price and availability.

Select Parameters
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Sheath Material
volts
watts
weight
win2
Clear Parameters
Select a Part
Part # Description  
128004 OTF-10 120V 250W Buy Now
128012 OTF-10 120V 350W Buy Now
128020 OTF-10 120V 600W Buy Now
128039 OTF-10 240V 250W Buy Now
128047 OTF-10 240V 350W Buy Now
128055 OTF-10 240V 600W Buy Now
128063 OTF-12 120V 500W Buy Now
128071 OTF-12 120V 750W Buy Now
128080 OTF-12 240V 250W Buy Now
128098 OTF-12 240V 500W Buy Now
128100 OTF-12 240V 750W Buy Now
128119 OTF-14 120V 900W Buy Now
128127 OTF-14 240V 500W Buy Now
128135 OTF-14 240V 900W Buy Now
128143 OTF-15 120V 325W Buy Now
128151 OTF-15 120V 1000W Buy Now
128160 OTF-15 240V 1000W Buy Now
128178 OTF-18 120V 500W Buy Now
128186 OTF-18 120V 1000W Buy Now
128194 OTF-18 120V 1300W Buy Now
128207 OTF-18 240V 500W Buy Now
128215 OTF-18 240V 1000W Buy Now
128223 OTF-18 240V 1300W Buy Now
128231 OTF-19 120V 1500W Buy Now
128240 OTF-19 240V 1000W Buy Now
128258 OTF-19 240V 1500W Buy Now
128266 OTF-21 240V 1000W Buy Now
128274 OTF-21 240V 1550W Buy Now
128282 OTF-24 240V 750W Buy Now
128290 OTF-24 240V 1000W Buy Now
128303 OTF-24 240V 1800W Buy Now
128311 OTF-100 120V 475W Buy Now
128320 OTF-100 120V 725W Buy Now
128338 OTF-100 240V 350W Buy Now
128346 OTF-100 240V 475W Buy Now
128354 OTF-100 240V 725W Buy Now
128362 OTF-120 120V 700W Buy Now
128370 OTF-120 120V 900W Buy Now
128389 OTF-120 240V 700W Buy Now
128397 OTF-120 240V 900W Buy Now
128400 OTF-140 120V 750W Buy Now
128418 OTF-140 120V 1100W Buy Now
128426 OTF-140 240V 750W Buy Now
128433 OTF-140 240V 1100W Buy Now
128442 OTF-150 240V 850W Buy Now
128450 OTF-150 240V 1250W Buy Now
128469 OTF-180 240V 750W Buy Now
128477 OTF-180 240V 1000W Buy Now
128485 OTF-180 240V 1550W Buy Now
128493 OTF-190 208V 1000W Buy Now
128506 OTF-190 240V 1000W Buy Now
128514 OTF-190 240V 1250W Buy Now
128522 OTF-190 240V 1700W Buy Now
128530 OTF-210 240V 750W Buy Now
128549 OTF-210 240V 1250W Buy Now
128557 OTF-210 240V 1900W Buy Now
128565 OTF-240 240V 1000W Buy Now
128573 OTF-240 240V 1450W Buy Now
128581 OTF-240 240V 2200W Buy Now
128602 OTF-25 240V 1250W Buy Now
128610 OTF-25 240V 2000W Buy Now
128629 OTF-26 120V 700W Buy Now
128637 OTF-26 240V 700W Buy Now
128645 OTF-26 240V 1350W Buy Now
128653 OTF-26 240V 2000W Buy Now
128670 OTF-30 240V 2350W Buy Now
128688 OTF-36 240V 1000W Buy Now
128696 OTF-36 240V 1800W Buy Now
128709 OTF-36 240V 2850W Buy Now
128717 OTF-38 120V 3100W Buy Now
128725 OTF-38 240V 3100W Buy Now
128733 OTF-43 240V 3450W Buy Now
128750 OTF-250 240V 1500W Buy Now
128768 OTF-250 240V 2400W Buy Now
128776 OTF-260 240V 1600W Buy Now
128784 OTF-260 240V 2500W Buy Now
128792 OTF-300 240V 1800W Buy Now
128805 OTF-300 240V 2800W HKL Buy Now
128813 OTF-330 120V 3150W Buy Now
128821 OTF-330 240V 3150W Buy Now
128830 OTF-360 240V 1500W Buy Now
128848 OTF-360 240V 2300W Buy Now
128856 OTF-360 240V 3450W Buy Now
128864 OTF-380 240V 2450W Buy Now
128872 OTF-380 240V 3600W Buy Now
128880 OTF-430 240V 4150W Buy Now
128944 OTF-330 240V 2100W Buy Now
128952 OTF-30 240V 1500W Buy Now
128960 OTF-38 240V 2000W Buy Now
128979 OTF-480 240V 2250W Buy Now
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