RO MEMBRANE 4021

The 4021 RO Membrane is a 4″ × 21″ thin-film composite reverse osmosis element designed for commercial and light industrial water purification systems. It delivers high-quality purified water with excellent salt rejection efficiency and stable performance. Suitable for brackish and borewell water applications, and compatible with standard 4″ membrane housings.

Key Features:

• High salt rejection (up to 98–99%)

• Consistent permeate flow output

• Long service life with proper pre-treatment

• Fits standard 4″ × 21″ RO membrane housings

Applications: Commercial RO plants, drinking water units, industrial water treatment, hotels, schools, and bottling units.