4373575 Whirlpool Undersink Filter Kit

The Whirlpool 4373575 filter kit includes 1 carbon block filter, 1 GAC filter, and 1 sediment filter for use with the WSR413 4 Stage Reverse Osmosis filter system to provide the highest level of contaminant reduction. The WSR413 system uses 2 carbon block filters, one as a pre-filter and 1 as a post-filter and the 4373575 filter kit only includes 1 carbon block replacement filter.