COMPLETE-Complete set 20inch big blue housing,with plastic wrench,screw and metal bracket.Housing only, filter cartridges are sold separately .clear housing allows you to see when you need to change filters and everything else works as it should.
STANDARD-Fits all standard sized 4-1/2 inch diameter industry 20 inch whole house cartridges
HIGH QUALITY-Fits NSF standard,Large capacity housing for high flow applications
WARRANTY-One year limited warranty
RESPONSABLE MANUFACTURER- ISO9001:2008 certificated Manufacturer ,also Member of Water Quality Association (WQA)