Zilmet Membrane 300LT is a product designed for water filtration. It is likely a replacement membrane for a specific water filtration system. The "300LT" part of the name might refer to its capacity or size.

Key Features 

Without more specific information, here are some potential features a water filtration membrane like this might have:

High flow rate: Efficient water filtration without compromising speed.

Superior filtration: Removes impurities, bacteria, and other contaminants from water.

Long lifespan: Durable and resistant to wear and tear.

Easy installation: Simple to replace in compatible filtration systems.

Compatible with various systems: Fits a range of water purification units.