Hydronix - SMCB-4520 - NSF Carbon Block Filter 4.5" x 20", 0.5m
SMCB-4520 NSF Certified Carbon Block Filter
High-capacity carbon block filtration for demanding applications
Solid Carbon Block
Compressed activated carbon removes chlorine, taste, odor, and organic contaminants through depth filtration with consistent 0.5 micron rating throughout the entire filter life
Extended 20" Length
The 4.5" x 20" dimensions provide significantly higher surface area and flow capacity compared to standard 10" filters, ideal for whole house and commercial installations
NSF Certified Materials
Meets NSF standards for material safety and contaminant reduction claims, giving you third-party verification for municipal and well water treatment applications
Well Water Ready
The 0.5 micron rating handles fine sediment while activated carbon addresses organic compounds, chlorine, and taste issues common in private well systems
Standard 20" Big Blue housings
The Hydronix SMCB-4520 fits all standard 20-inch filter housings with 4.5" outer diameter capacity, including Pentek, Culligan, and generic Big Blue style housings. Common compatible housing models include Pentek 20-BB, Hydronix HF2-20BB4, and similar 20" x 4.5" sump designs for whole house and commercial applications.
Replacement schedule for optimal performance
Whole House & Municipal
Replace every 6-12 months depending on water quality and household size. Higher chlorine levels and larger families require more frequent changes
Well Water Applications
Well water with higher organic content, tannins, or sediment load may require replacement every 3-6 months to maintain flow rate and taste quality
Commercial & High Volume
Monitor pressure drop and flow rate. Replace when pressure differential exceeds 15 PSI or when taste and odor issues return
Commercial Grade
Built for high-demand installations with extended filter life
Superior Filtration
0.5 micron carbon block removes sediment and chemical contaminants
Easy Replacement
Standard sizing fits existing 20" Big Blue housings without modification
Hydronix Reliability
Trusted brand with consistent quality and NSF certification
SMCB-4520 NSF Certified Carbon Block Filter
High-capacity carbon block filtration for demanding applications
Solid Carbon Block
Compressed activated carbon removes chlorine, taste, odor, and organic contaminants through depth filtration with consistent 0.5 micron rating throughout the entire filter life
Extended 20" Length
The 4.5" x 20" dimensions provide significantly higher surface area and flow capacity compared to standard 10" filters, ideal for whole house and commercial installations
NSF Certified Materials
Meets NSF standards for material safety and contaminant reduction claims, giving you third-party verification for municipal and well water treatment applications
Well Water Ready
The 0.5 micron rating handles fine sediment while activated carbon addresses organic compounds, chlorine, and taste issues common in private well systems
Standard 20" Big Blue housings
The Hydronix SMCB-4520 fits all standard 20-inch filter housings with 4.5" outer diameter capacity, including Pentek, Culligan, and generic Big Blue style housings. Common compatible housing models include Pentek 20-BB, Hydronix HF2-20BB4, and similar 20" x 4.5" sump designs for whole house and commercial applications.
Replacement schedule for optimal performance
Whole House & Municipal
Replace every 6-12 months depending on water quality and household size. Higher chlorine levels and larger families require more frequent changes
Well Water Applications
Well water with higher organic content, tannins, or sediment load may require replacement every 3-6 months to maintain flow rate and taste quality
Commercial & High Volume
Monitor pressure drop and flow rate. Replace when pressure differential exceeds 15 PSI or when taste and odor issues return
Commercial Grade
Built for high-demand installations with extended filter life
Superior Filtration
0.5 micron carbon block removes sediment and chemical contaminants
Easy Replacement
Standard sizing fits existing 20" Big Blue housings without modification
Hydronix Reliability
Trusted brand with consistent quality and NSF certification
Original: $89.99
-65%$89.99
$31.50Description
SMCB-4520 NSF Certified Carbon Block Filter
High-capacity carbon block filtration for demanding applications
Solid Carbon Block
Compressed activated carbon removes chlorine, taste, odor, and organic contaminants through depth filtration with consistent 0.5 micron rating throughout the entire filter life
Extended 20" Length
The 4.5" x 20" dimensions provide significantly higher surface area and flow capacity compared to standard 10" filters, ideal for whole house and commercial installations
NSF Certified Materials
Meets NSF standards for material safety and contaminant reduction claims, giving you third-party verification for municipal and well water treatment applications
Well Water Ready
The 0.5 micron rating handles fine sediment while activated carbon addresses organic compounds, chlorine, and taste issues common in private well systems
Standard 20" Big Blue housings
The Hydronix SMCB-4520 fits all standard 20-inch filter housings with 4.5" outer diameter capacity, including Pentek, Culligan, and generic Big Blue style housings. Common compatible housing models include Pentek 20-BB, Hydronix HF2-20BB4, and similar 20" x 4.5" sump designs for whole house and commercial applications.
Replacement schedule for optimal performance
Whole House & Municipal
Replace every 6-12 months depending on water quality and household size. Higher chlorine levels and larger families require more frequent changes
Well Water Applications
Well water with higher organic content, tannins, or sediment load may require replacement every 3-6 months to maintain flow rate and taste quality
Commercial & High Volume
Monitor pressure drop and flow rate. Replace when pressure differential exceeds 15 PSI or when taste and odor issues return
Commercial Grade
Built for high-demand installations with extended filter life
Superior Filtration
0.5 micron carbon block removes sediment and chemical contaminants
Easy Replacement
Standard sizing fits existing 20" Big Blue housings without modification
Hydronix Reliability
Trusted brand with consistent quality and NSF certification
