Best Welds 5.25 x 4.5" Polycarbonate Filter Plate, Gold Coated (Best Welds 901-932-110-12) | HomElectrical.com
NANPU Polycarbonate Bowl with Semi-Auto Drain Replacement Kit for AF AW AW-D AC ARF DFR NW NW-D NC NC-D Series Filter/Regulator (1/2" NPT): Amazon.com: Industrial & Scientific
Filtre Polycarbonate - 37mm - 0.4um 100 PAR PACK* P102100 - LINKMAN GROUP (HIGH ROCK LTD)
ISOPORE polycarbonate 0.2 um filter 25 mm diameter Millipore