PadMatch / Every humidifier water panel and furnace filter size
- Nominal size
- 16 x 25 x 6 in
- Actual size
- 15.75 x 24.25 x 6 in
- Depth class
- 6 in (media cabinet)
- Order by
- nominal size (16 x 25 x 6 in)
- Typically installed on
- Aprilaire 2400 and Space-Gard 2400 media cabinets and Honeywell F100/F200 16x25
The true measured dimensions of a 16 x 25 x 6 in filter and how to order it.
The nominal size 16 x 25 x 6 in is the name on the frame; the actual size is 15.75 x 24.25 x 6 in. On a flat filter each face runs about half an inch under nominal and a one-inch filter is really three quarters of an inch thick.
The 16-wide six-inch media filter, a genuine six inches deep. It is the Aprilaire 2400 / Space-Gard 2400 cabinet size and takes the Aprilaire 401 media.
Find your model
Read the number stamped on the humidifier cabinet or printed on the old pad, then match it below. Confirm the frame size before buying a generic.
- 16 x 25 x 6 in furnace filteractual 15.75 x 24.25 x 6 in
- MERV 8 vs 11 vs 13which rating to buy
- 20 x 25 x 6 in actual sizeactual 19.75 x 24.25 x 6 in
Sources: Aprilaire 401 MERV 13 replacement media for 2400 / Space-Gard 2400 (Amazon OEM) ยท Atomic Filters nominal vs actual air filter size chart