Case contains 25 Midi (400 mL or 13.5 ounce) size lids with 200 Micron Filters.

These are replacement lids which fit 3M™ PPS™ Midi Lids and Liners part number 16112. 

About the new Midi size:

You asked for a PPS™ Cup, Lid and Liner that was smaller than our Standard size, but larger than the Mini.

3M is excited to offer the new Midi PPS™ - giving you the most comprehensive range of PPS™ size options for precise, accurate coverage.

Ideal for two-panel repairs that require 13.5 fluid ounces of material or less.