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Garage remotes
- Open the case (usually a small screw or clip). The SKU is often molded or printed on the circuit board or inside the back shell (
81LM, 893MAX, etc.).
- Also check the opener head: the learn-button color matters as much as the remote SKU. Use the learn-button guide.
Tool batteries
- Look on the label wrap for the catalog number (
48-11-1850, DCB205, …).
- Confirm the rail family printed on the tool (M18 vs M12, 20V MAX, etc.). Packs do not cross platforms.
Fridge water filters
- Pull the old filter and read the number on the cartridge body (EveryDrop
EDR1RXD1, GE MWF, Samsung DA29-…, …).
- Do not rely on “looks similar” photos. Housing shape and filter numbers are hard stops — see fridge filter compare.
HVAC furnace / AC filters
- Read width × length × thickness printed on the cardboard frame edge (inches).
- MERV / MPR grade is separate from size. Size guide: filter size. Grade guide: Filtrete MERV.
Faucet cartridges
- After shutdown, pull the cartridge and read the stamp (Moen
1225 vs 1255 are different).
- Moen cartridge guide