Amazon.com: Replacement A-Coil Filters Compatible with Nordyne C8DAM01830U-B, 921784, and Many Nordyne/Intertherm Models - 15" x 17" x 1/8" - 2-Pack : Appliances
Amazon.com: INTERTHERM 903595 18" X 28-3/4" X 1" ELECTRONIC AIR FILTER WITH CORD 24V : Everything Else
How to Change a Furnace Filter For Dummies - YouTube
Miller Intertherm Foam Filter 1/4" x 19" x 54" For Mobile Home/RV Furnaces - H & S Mobile Home Supplies
Intertherm Heating and Cooling
2x OEM Intertherm NORDYNE Furnace A-coil Air Filter Aluminum Mesh 19 X 16 917763 for sale online | eBay