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The Lennox 16x25x5 nominal housing requires a precise actual fit of 15 3/4" x 24 3/4" x 4 3/8" to prevent air bypass
How many circuits can this timer control simultaneously
The included bulb strap ensures positive thermal contact on the suction line
verify lead orientation
Rheem-Ruud 47-21517-82 Control Board Kit Freon The Lennox 16x25x5 nominal housingThe Rheem Ruud 47 21517 82 Defrost Control Board Kit is a direct OEM replacement engineered to manage the complex demand defrost logic in high efficiency heat pump systems. This microprocessor based controller monitors ambient and coil temperature sensors to execute precise defrost cycles, preventing excessive ice accumulation on the outdoor coil that can compromise compressor longevity and system COP. Designed for compatibility with various Rheem 47