Home › Models › Levoit LUH-O451S

What filter does a Levoit LUH-O451S take?

None — this model has no replaceable wick or filter.

Levoit LUH-O451S, ultrasonic humidifier, tabletop, sold as the OasisMist.

Uses a washable sponge — rinse and reuse it; Levoit sells no replacement part for this model.

Finding the model number on a Levoit

Levoit ultrasonic models (LV600HH, Classic 300S) have no required replaceable filter. Model number is on the bottom label.

This entry exists so the answer is complete: if a store tries to sell you a replacement filter for this model, it is not a manufacturer part.