Blank filter discs can be custom processed into any required size and shape. The maximum customized size is generally limited to 60mm x 60mm.
Size Tolerance for Unmounted Bare Filters:
For diameter ≤ 25.4mm: Diameter tolerance +0/-0.1mm; thickness tolerance ±0.1mm
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For diameter > 25.4mm: Diameter tolerance +0/-0.2mm; thickness tolerance ±0.1mm