Membrane S1229RS = Newer 50 GPD TFC Revised Seal Membrane used in Microline TFC-335, and TFC-435 and TFC-300
S1229RS is used in the newer "35 gpd" models, such as the T.F.C. - 335 and - 435.
This is original manufacturer membrane from Clack Corporation.

The newer S1229RS membrane is rated to produce up to 50 gpd.
Can be used in older 25 gpd systems ( as replacement for the S1227RS ).
Recommended drain restrictor is Green / Natural ( S2116-5 ).

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