FC100A1011 Honeywell 20x20x5 MERV 10 Filter Media
OEM Honeywell Replacement Media - FC100A1011- 20x20 Original Honeywell MERV
10 Factory Replacement Filter 20" X 20" X 5" (actual size 19 7/8" X 19 7/8" X 4
3/8") Fits Honeywell Series: F25/F35/F100/F150, including F100F2036 Replaces
FC35A1019 / 203721 How do media filters work? Ultra-Web technology is exclusive
to high-efficiency Honeywell Media Air Cleaners. Media air filters, at the
microscopic level, consist of an interlocking network of fibers that appear
quite porous. This porosity is necessary to allow air to pass through the unit
with minimal pressure drop. The interlocking fibers of the Ultra-Web material
form a web that captures particles that pass right through them. The particles
are captured three different ways. Diffusion: The random trajectory of many
particles, jostled by molecules, carries them directly into the path of the
fiber. Impaction: Many particles are too heavy to move out of the path of a
fiber, so they slam into a fiber and stick Interception: Random air current
cause particles to sweep too close to a fiber, and due to molecular attraction,
the fiber grabs the particle For optimum system performance, replace the filter
every six months (before heating season and before cooling season).