Product Fit For: Versatile Applications – Ideal for a range of uses, including residential, commercial, industrial and agricultural setups as well as whole house systems, car washes and reverse osmosis systems. This membrane provides superior water purification for diverse needs. Universal Compatibility – Compatible with popular models such as BW30-4040, BW-4040, AG4040FF, AG4040TF, TW30-4040, and RE4040-BE0. It also replaces HF1-4040, HF6-4040; LE-4040, LP-4040; AK4040TM; and TMG10 – as well as most other industry-standard «stinger style» 4″ x 40″ Size RO System. Item Features: .