The Tucker® RIVAL series 4 x 40" RO membrane manufactured by AXEON is a very economical replacement option for your RO/DI water fed pole system.
This is the membrane found in the Tucker® RIVAL Series RO/DI Systems.
This Tucker® RIVAL Series membrane by Axeon is a 100 PSI membrane that is comparable to most other non-Tucker RO membranes on the market today.
Consider changing your RO membrane when it has began to remove less than 80% of the impurities in the water. The fewer impurities the RO can remove the more you will spend on DI filter replacements.