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  1. All Filters

  2. Water Filters  >  Undersink Filters

Under-Sink Water Filters


3MDW301 NSF Certified
3M Aqua-Pure 3MDW301 Advanced Under-Sink Water Filter
List Price: $661.20

Our Price: $312.57

Save: $348.63!
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Replace filter every 12 months
Culligan US-EZ-4 NSF Certified
Culligan US-EZ-4 Undersink Water Filter (Level 4 Premium Filtration)
List Price: $110.99

Our Price: $82.78

Save: $28.21!
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Replace filter every 6 months
Faucet available in 20 finishes!
aquapure Complete NSF Certified
3M Aqua-Pure AP Easy Complete Undersink Water Filter
List Price: $235.00

Our Price: $123.95

Save: $111.05!
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Replace filter every 6-12 months
Faucet available in 19 finishes!
aquapure AP-DWS1000 Rated #1
Aqua-Pure AP-DWS1000 Undersink Water Filter
List Price: $504.00

Our Price: $308.03

Save: $195.97!
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Replace filter every 6-12 months
Rated #1 by a leading consumer magazine!
Culligan US-EZ-3 NSF Certified
Culligan US-EZ-3 Undersink Water Filter (Level 3 Advanced Filtration)
List Price: $74.99

Our Price: $49.21

Save: $25.78!
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Replace filter every 6 months
Faucet available in 20 finishes!
Culligan US-EZ-1 NSF Certified
Culligan US-EZ-1 Undersink Water Filter (Level 1 Basic Filtration)
List Price: $44.99

Our Price: $34.68

Save: $10.31!
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Replace filter every 12 months
Faucet available in 20 finishes!
3MFF100 NSF Certified
3M Aqua-Pure 3MFF100 Inline Full Flow Undersink Water Filter
List Price: $402.59

Our Price: $190.31

Save: $212.28!
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Replace filter every 12 months
Flow Rate: 2.5 gpm
aquapure CS-FF NSF Certified
Aqua-Pure CS-FF/Cyst-FF Inline Full Flow Drinking Water Filter
List Price: $230.53

Our Price: $107.94

Save: $122.59!
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Replace filter every 6-12 months
Flow Rate: 2.0 or 1.5 gpm
Culligan US-600A NSF Certified
Culligan US-600A Undersink Water Filter with 3/8" Fittings
List Price: $39.99

Our Price: $30.55

Save: $9.44!
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Replace filter every 12 months
Flow Rate: 0.6, 0.9, or 1.0 gpm
3M AP200 NSF Certified
3M Aqua-Pure AP200 Full Flow UnderSink Water Filter
List Price: $228.85

Our Price: $108.18

Save: $120.67!
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Replace filter every 6 months
Culligan RC-EZ-4 NSF Certified
  • 5 Stars
  • (3)
Culligan RC-EZ-4 Drinking Water Filter Replacement Cartridge (Level 4 Premium Filtration)
List Price: $59.99

Our Price: $43.12

Save: $16.87!
VIEW DETAILS
Replace every 6 months
Culligan RC-EZ-3 NSF Certified
Culligan RC-EZ-3 Drinking Water Filter Replacement Cartridge (Level 3 Advanced Filtration)
List Price: $29.99

Our Price: $24.20

Save: $5.79!
VIEW DETAILS
Replace every 6 months
Culligan RC-EZ-1 NSF Certified
  • 4.5 Stars
  • (2)
Culligan RC-EZ-1 Drinking Water Filter Replacement Cartridge (Level 1 Basic Filtration)
List Price: $14.99

Our Price: $13.77

Save: $1.22!
VIEW DETAILS
Replace every 12 months
Culligan 1000R NSF Certified
  • 5 Stars
  • (7)
Culligan 1000R Filter Replacement Cartridge (Level 3 Advanced Filtration)
List Price: $28.99

Our Price: $25.99

Save: $3.00!
VIEW DETAILS
Replace every 6 months
Culligan 750R NSF Certified
  • 5 Stars
  • (1)
Culligan 750R Filter Replacement Cartridge (Level 1 Basic Filtration)
List Price: $19.99

Our Price: $16.99

Save: $3.00!
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Replace every 12 months
Culligan D-40A NSF Certified
  • 4 Stars
  • (1)
Culligan D-40A Drinking Filter Replacement Cartridge (Level 4 Premium Filtration)
List Price: $35.99

Our Price: $31.44

Save: $4.55!
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Replace every 6 months
Culligan D-30A NSF Certified
  • 5 Stars
  • (2)
Culligan D-30A Drinking Filter Replacement Cartridge (Level 2 Extra Filtration)
List Price: $17.99

Our Price: $15.26

Save: $2.73!
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Replace every 12 months
Culligan D-20A NSF Certified
  • 5 Stars
  • (1)
Culligan D-20A Drinking Filter Replacement Cartridge (Level 1 Basic Filtration)
List Price: $10.99

Our Price: $8.60

Save: $2.39!
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Replace every 12 months
Culligan D-10 NSF Certified
  • 5 Stars
  • (1)
Culligan D-10A Drinking Filter Replacement Cartridge (2 Pack)
List Price: $14.95

Our Price: $10.78

Save: $4.17!
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Replace every 3 months
Culligan D-250A
Culligan D-250A Drinking Filter Replacement Cartridge Set (Level 4 Premium Filtration)
List Price: $44.99

Our Price: $35.16

Save: $9.83!
VIEW DETAILS
Replace every 6 months
3MFF101 NSF Certified
  • 5 Stars
  • (2)
3M Aqua-Pure 3MFF101 Filter Replacement Cartridge
List Price: $316.32

Our Price: $149.53

Save: $166.79!
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Replace every 12 months
3MDW311 NSF Certified
Aqua-Pure 3MDW311 Filter Replacement Cartridge
List Price: $400.74

Our Price: $189.44

Save: $211.30!
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Replace every 12 months
aquapure c-complete NSF Certified
  • 5 Stars
  • (4)
Aqua-Pure C-Complete Replacement Cartridge
List Price: $128.43

Our Price: $60.71

Save: $67.72!
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Replace every 6-12 months
aquapure AP-DW8090 NSF Certified
  • 5 Stars
  • (1)
Aqua-Pure AP-DW80/90 Replacement Cartridge
List Price: $221.63

Our Price: $104.77

Save: $116.86!
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Replace every 6-12 months
aquapure c-cyst-ff NSF Certified
  • 5 Stars
  • (1)
Aqua-Pure C-Cyst-FF Replacement Cartridge
List Price: $147.41

Our Price: $69.69

Save: $77.72!
VIEW DETAILS
Replace every 6-12 months
For Cyst-FF Inline Drinking Water Filter
aquapure C-CS-FF NSF Certified
  • 5 Stars
  • (1)
Aqua-Pure C-CS-FF Replacement Cartridge
List Price: $89.90

Our Price: $42.49

Save: $47.41!
VIEW DETAILS
Replace every 6-12 months
For CS-FF Inline Drinking Water Filter
EP15 Everpure NSF Certified
Aqua-Pure Branded EP15 Everpure Drinking Filter Replacement Cartridge
List Price: $109.17

Our Price: $54.99

Save: $54.18!
VIEW DETAILS
Replace every 6 months
EP25 Everpure NSF Certified
Aqua-Pure Branded EP25 Everpure Drinking Filter Replacement Cartridge
List Price: $147.22

Our Price: $69.99

Save: $77.23!
VIEW DETAILS
Replace every 6 months
EP35R Everpure NSF Certified
Aqua-Pure Branded EP35R Everpure Drinking Filter Replacement Cartridge
List Price: $175.78

Our Price: $89.99

Save: $85.79!
VIEW DETAILS
Replace every 6 months
Aqua-Pure AP217 NSF Certified
3M Aqua-Pure AP217 Replacement Cartridge
List Price: $140.06

Our Price: $66.21

Save: $73.85!
VIEW DETAILS
Replace every 6 months
Multipure CB6 Aquaversa
  • 5 Stars
  • (39)
HydroGuard HDG-CB6-14 Multipure Aquaversa CB6 Compatible Filter
List Price: $69.95

Our Price: $27.19

Save: $42.76!
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Pentek P-250
Pentek P-250 / 155584-44 Filter Replacement Cartridge Set for US-1500
List Price: $28.61

Our Price: $23.98

Save: $4.63!
VIEW DETAILS
Replace every 6 months
Pentek P-250A
  • 5 Stars
  • (1)
Pentek P-250A / 155832-44 Filter Replacement Cartridge Set for US-1000
List Price: $28.61

Our Price: $24.59

Save: $4.02!
VIEW DETAILS
Replace every 6 months
Pentek QC10-CBRR
Pentek QC10-CBRR / 155785-43 Enhanced Carbon Block Replacement Filter
List Price: $29.54

Our Price: $23.75

Save: $5.79!
VIEW DETAILS
Replace every 6 months
Pentek MG-10MCB
Pentek 255420-43 / MG-10MCB MicroGuard Carbon Block Filter Cartridge
List Price: $77.99

Our Price: $60.74

Save: $17.25!
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