Koch Air Filter 16 x 20 x 4 MERV 11 Multi-Pleat XL11 Pleated Air Filter - 3 Pack

The same Koch Multi-Pleat XL11 MERV 11 filter — model 102-499-025 — in a 3-pack. Nominal 16 x 20 x 4, actual dimensions 15½" × 19½" × 3¾". Replace quarterly and this pack covers a full year in a single order.

Filters sold individually elsewhere ship at a cost that frequently exceeds the cost of the filter itself. A 3-pack ships once, arrives together, and keeps one year of replacements on the shelf where they belong.

What's in the Pack

Three Koch Multi-Pleat XL11 MERV 11 filters. At a quarterly replacement schedule, this is a 12-month supply for one system. Replace in January, April, July, and October — or set a calendar reminder and order your next 3-pack when you install the third filter.

Filter Specifications

The XL11 is a direct upgrade from MERV 6 and MERV 7 pleated filters with minimal increase in airflow resistance. Hydrophobic media maintains performance in high-humidity environments. Sealed media pack eliminates air bypass.

Availability note: This item ships from stock when available. Larger quantities may require additional lead time. Contact us to confirm availability before ordering if timing is a factor.

Maintaining multiple systems or want a longer supply on hand? The 6-pack is also available.