Breathe Naturally Carbon Pre-Filter Replacement for Honeywell 38002, Activated Carbon Pre-Filter 16"x48" Trim to Cut Sheets(2 pack) 2-Pack of Large Activated Carbon Pre-Filters 16"x48" Fits most Honeywell models, including series 10000, 11000, 12000, 13000, 14000, 15000, 17000, 18000, 40000, 50000, and 60000 Cut-To-Fit for almost any size air purifier Made in the USA From BulkFilter Brand Filters Breathe Naturally Custom Replacement Filters