Culligan Whole House Water Filter For HD-950A CW5-BBSfrom $17.29 up to $19.99 Compare prices2→The Culligan CW5-BBS fine particles filter cartridge reduces sediment, rust, scale, dirt, coarse sand, sand, fine sand, extra fine sand and silt. The replacement cartridge is for use in HD-950A and WH more→-HD200-C. The filter is recommended for city and well water supplies. The cartridge life is up to 4 months or 16,000 gallons.