How to measure your replacement filter

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Start with actual dimensions.

Measure the outside width and height of the filter frame, then its depth. For pads, record the finished cut dimensions; for rolls, record both width and length. Nominal size labels may differ from actual dimensions, so include both when available.

Include photos of the existing filter and label, equipment model, replacement quantity and any required efficiency or test standard. Our team can use this information to review the next step.