2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff

2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff

$13.99
$13.99 $23.99
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2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
  • 2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff
2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff

2-Pack R20017402 52M73 Rollout Switch L350F, Replacement Furnace Limit Switch Compatible with Lennox/Ducane/Armstrong, Armstrong - High Temp Safety Cutoff

$13.99
$13.99 $23.99
FREE shipping on this itemShips from West Long Branch, NJ. Typically arrives in 3–7 business days.
30-day returnsChanged your mind? Send it back within 30 days. Return policy
Secure checkoutQuestions? Call 1-888-460-3822 · Mon–Fri 9–5 ET

Key features

  • Wide Compatibility: Engineered as a drop-in replacement limit switch compatible with Lennox, Ducane, and Armstrong gas furnaces. verify your model before ordering.
  • Manual Reset L350F: Trips precisely at 350°F to cut burner power and prevent overheating. Once fully cooled, simply press the reset button; manual reset ensures you address the root issue before restarting.
  • Critical Safety Protection: Instantly interrupts power if internal temperature exceeds 350°F. Prevents heat exchanger overheating, component burnout, and fire hazards while maintaining efficient heating cycles.
  • Premium Materials: Constructed from high-temp bakelite and stainless steel with anti-oxidation contacts. Resists corrosion, erosion, and sticking for consistent on/off action and long service life.
  • Replacement parts: Replaces R20017402 52M73. Perfect for immediate repairs or keeping a spare—no downtime when you need heat most.

Free shipping included. 30-day hassle-free returns.

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