4EVERFLEX®: the ideal film for long-lasting, safe tanks

The choice of film for a tank is crucial to its durability and smooth operation. 4everflex® is an exclusive film developed by NPI that combines the resistance of PVC with the flexibility of EPDM, offering the best of both worlds.

This product stands out for its high elasticity, ease of application and excellent welding performance, adapting to any tank shape with a precise and secure finish. It is an environmentally, plant and fish friendly solution – free from harmful substances and odourless, respecting even the most sensitive olfactory systems, such as that of koi fish.

With a 15-year guarantee, which also includes the welded and glued joints manufactured by NPI, 4everflex® is a reliable option for installers and end users alike.

NPI has over 65 years’ experience in the development and manufacture of waterproofing solutions, maintaining its commitment to quality, innovation and the well-being of aquatic ecosystems.