APRILAIRE

AprilAire RP-S86W MUPR Wi-Fi Thermostat Programmable 1/2" Smart Control Energy..

Model 1007373 is easy to troubleshoot thanks to its simple construction.

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AprilAire 5000 Electronic Air Purifier

A nice touch is the ceramic insert that simplifies assembly.

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Aprilaire 4868 Replacement Snap-In Door for Models 1410 to 4400 Air Cleaners

What I noticed is the 1 inch by 2 inches by 1 inch size, which is quite straightforward.

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