Armstrong / Ducane / Lennox Draft Pressure Switch 11U64

Armstrong / Ducane / Lennox draft proving pressure switch P/N 11U64

Replaces P/N P104371-01, S111910-1 

Genuine Lennox, Ducae, Armstrong parts

Shipping rate for continental United States

$63.00

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  • Model: 11U64
  • Manufactured by: Armstrong Parts
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98%
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Verified Buyer
August 9, 2025 by Arthur E. (United States)
“Been buying filters here for years. Price went up a little and when I checked around I found Shortys was still reasonable and we have had great service from them.”
Verified Buyer
August 9, 2025 by Ed C. (FL, United States)
“Nice and easy, but the cost for this item keeps rising - a lot!”
Verified Buyer
August 7, 2025 by RB (IN, United States)
“EZ and quick!”

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