Features:

• Fits all round Honeywell HEPA air cleaner models.
• Universal Cut-to-Fit activated carbon pre-filter helps remove large particles and reduce common household odors.
• The 38002 replaces the following pre-filters: 12520, 31002, 32002, 33002, 34002, and 35002.
• Makes 1 to 3 pre-filters depending on the model.
• Large 15-3/4 x 48 cut-to-fit activated carbon sheet!

Editor Reviews:

Product Description:
For optimum performance replace filter every 2 to 3 months.

Rating : - pre fileter
i wasn't sure if these were the actual honeywell filters. i don't believe they are. they didn't come with the precut lines like the honeywell.