How to Find Your LG Washer Model Number
- Open the door and inspect the door frame or inner rim — LG front-load tags are usually on the opening you see with the door open.
- Check the rear panel near the top if the frame tag is worn.
- LG washer models often start with WM (front-load) or WT (top-load), e.g. WM3900HWA.
- Confirm the full model before ordering — the drain pump and door lock differ between WM3900 and WM4000 platforms.
- Keep the serial number handy for warranty and recall checks.