Pentek Big Blue EPM-20BB 20 inch × 4 1/2 inch High Dirt Holding Capacity Carbon Block Cartridge Whirlpool Undersink Filters it ensures long-lasting and trouble-free

it ensures long-lasting and trouble-free performance

and replaceable electrode mean that you can rely on this meter for years

For use with Essick Air Products models 427-300

10x20x2 MERV 13 Air Filter - Box of 6

Pentek Big Blue EPM-20BB 20 inch × 4 1/2 inch High Dirt Holding Capacity Carbon Block Cartridge Whirlpool Undersink Filters it ensures long-lasting and trouble-freeThe Pentek Big Blue EPM 20BB 155783 43 20 inch 4 1 2 inch High Dirt Holding Capacity Carbon Block Cartridge combines quality and functionality with durability for a lifetime of customer satisfaction. A high porosity design helps prevent the cartridge from plugging before its adsorption capacity is exhausted, maximizing the utilization of the carbon while maintaining low pressure drop. Features: Nominal 10 micron rating* Enhanced dirt holding capacity