Why choose the M21.5 Faucet Aerator Insert?

Swapping your existing aerator with an M21.5-size flow restrictor insert is one of the quickest, lowest-cost improvements you can make to your sink. This compact insert delivers a consistent, 1.5 GPM (gallons per minute) flow that balances water conservation with comfortable pressure, making it an ideal choice for households and commercial washrooms alike.

Key benefits

• Save water: 1.5 GPM reduces consumption while maintaining effective performance.
• Anti-splash stream: Aerated bubble flow prevents messy splashes for a cleaner sink area.
• Built-in filtration: Fine mesh screen filters out sediment and debris to protect your faucet and improve water clarity.
• Durable build: High-quality ABS plastic with a silicone gasket for a reliable, leak-free seal.
• Easy installation: Tool-free replacement—install in minutes and restore optimal flow.

Where to use it

This insert is versatile enough for both bathroom and kitchen sinks. Use it in everyday basins where you want to:

• Reduce water usage without losing pressure
• Reduce splashing during handwashing and dish rinsing
• Limit sediment build-up inside your faucet

Installation — quick, tool-free

1. Turn off the faucet and remove the existing aerator by twisting it counterclockwise (hand-tighten threads only).
2. Inspect the faucet threads and clean out any debris for a smooth seal.
3. Insert the M21.5 flow restrictor and press it into place; screw in clockwise if your faucet uses a threaded aerator (or press-fit depending on model).
4. Turn the water on and check for leaks. If needed, press the insert further or replace the gasket.

Note: If your faucet requires a different thread size, check compatibility or use an adapter to fit M21.5 inserts.