Goof Proof Sheet Membrane Mixing Valve Seal is used for additional water control around shower valves. Installs easily with modified thin-set or Goof Proof Sealant GPS-2000. Measures 9.25 ins. x 9.25 ins. x 20 mil thick. A 4.5 in. rubber reinforced center opening hole fits most valves
GPMVS-Mixing Valve Seal
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