This filter is a compatible replacement for the Honeywell FC40R1830. It has a MERV 10 efficiency rating which allows it to capture harmful indoor air particles like pollen and pet dander.
Nominal size: 18x30x4-3/8
Actual size (with header): 14-3/4 x 29-3/4 x 4-3/8
Also known as FC40R-1830.
The Magnet logo on this page signifies that this product is a factory direct replacement to the OEM branded filter.