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Filter Housings for 4.5 Inch Diameter Filters
4.5 Diameter Filters are designed for applications that demand higher flow rates and longer filter life. These large-format filters, often referred to as Big Blue size, are ideal for whole-house, commercial, and light industrial water systems. Their wider diameter allows for greater dirt-holding capacity, which helps reduce pressure drop and extend replacement intervals. This makes them a practical solution for homes with high water usage or properties that rely on well water. When paired with the correct housing, they deliver steady performance and consistent filtration throughout the system.
About 4.5 Diameter Filter Housings and Parts
Our collection includes durable filter housings built specifically for 4.5-inch diameter cartridges in both 10-inch and 20-inch lengths. Options are available with different port sizes to match residential, commercial, or hydroponic setups. Many housings feature pressure relief buttons for easier maintenance and safer cartridge changes. Clear sump designs allow you to visually inspect sediment buildup, while solid housings offer added strength for demanding environments. Along with complete housings, you will also find replacement parts that keep your system running smoothly.
Why Choose iFilters for 4.5 Diameter Filter Products?
At iFilters, we focus on dependable filtration solutions that fit real-world water conditions. Our selection of 4.5 Diameter Filters and compatible housings is curated for performance, durability, and compatibility. We offer trusted brands, detailed product information, and fast shipping so you can upgrade or maintain your system with confidence. Our team understands water filtration and works to make product selection straightforward and stress-free.
Shop 4.5 Diameter Filters online today!
Hydronix 20"x4.5" HF45-20BLBK10PR Whole House Housing, 1" In/Out Ports W/ Pressure Relief Button
in stock
Original price
$52.49
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$52.49
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$52.49
$52.49
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$52.49
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$52.49
The Hydronix HF45-20BLBK10PR 20" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. This housing...
View full details
Original price
$52.49
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Original price
$52.49
Original price
$52.49
$52.49
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$52.49
Current price
$52.49
Hydronix Hight Temp Hot Water Filter Housing For Home, Commercial, Industrial, 20", 1" Ports
in stock
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$169.99
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$200.00
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$169.99
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$200.00
$169.99
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$200.00
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$169.99
Hydronix High-Temperature Hot Water Filter Housing – 20", 1" Ports Designed for high-temperature applications, the Hydronix HF45HT Series is a heav...
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$169.99
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$200.00
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$169.99
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$200.00
$169.99
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$200.00
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$169.99
Original price
$51.97
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Original price
$51.97
Original price
$51.97
$51.97
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$51.97
Current price
$51.97
The Hydronix HF45-20BLBK10 20" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. It is made of ...
View full details
Original price
$51.97
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Original price
$51.97
Original price
$51.97
$51.97
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$51.97
Current price
$51.97
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$53.24
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$53.24
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$53.24
$53.24
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$53.24
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$53.24
Hydronix HF45 Series (Pressure Relief Button version) Commercial Filter Housings are high durability commercial filter housings for 20" length cart...
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$53.24
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$53.24
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$53.24
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$99.00
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$99.00
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$99.00
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$99.00
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$99.00
The Hydronix HF45-20CLBK15PR Big Blue size 20" Clear Filter Housing with PR button is an extra-wide housing that accommodates large 4.5" wide filte...
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$99.00
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$99.00
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$99.00
$99.00
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$99.00
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$99.00
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$87.28
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$87.28
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$87.28
$87.28
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$87.28
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$87.28
The Hydronix HF45-20CLBK10 (Note: Picture shows PR version, this one does not include the PR button) 20" Clear Filter Housing is an extra-wide hous...
View full details
Original price
$87.28
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Original price
$87.28
Original price
$87.28
$87.28
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$87.28
Current price
$87.28
Original price
$40.19
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$40.19
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$40.19
$40.19
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$40.19
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$40.19
The Hydronix HF45-10BLBK10PR 10" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. This housing...
View full details
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$40.19
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$40.19
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$40.19
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$40.19
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$40.19
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$211.77
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$211.77
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$211.77
$211.77
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$211.77
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$211.77
The Hydronix HF45-20CLBK10PR 20" Clear Filter Housing (with Pressure Relief Button) is an extra-wide housing that accommodates large 4.5" wide filt...
View full details
Original price
$211.77
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$211.77
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$211.77
$211.77
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$211.77
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$211.77
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$62.79
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$62.79
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$62.79
$62.79
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$62.79
Current price
$62.79
The Hydronix HF45-10CLBK10PR 10" Clear Filter Housing (with Pressure Relief Button) is an extra-wide housing that accommodates large 4.5" wide filt...
View full details
Original price
$62.79
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Original price
$62.79
Original price
$62.79
$62.79
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$62.79
Current price
$62.79
Original price
$51.97
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$51.97
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$51.97
$51.97
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$51.97
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$51.97
The Hydronix HF45-20BLBK34 20" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. It is made of ...
View full details
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$51.97
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$51.97
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$51.97
$51.97
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$51.97
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$51.97
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$61.00
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$61.00
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$61.00
$61.00
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$61.00
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$61.00
Hydronix HF45 Series Commercial Filter Housings are high durability commercial filter housings for 20" length cartridges. HF45 Series housings have...
View full details
Original price
$61.00
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$61.00
Original price
$61.00
$61.00
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$61.00
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$61.00
Original price
$62.79
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$62.79
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$62.79
$62.79
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$62.79
Current price
$62.79
The Hydronix HF45-10CLBK34 (Note: Picture shows PR version, this one does not include the PR button) 10" Clear Filter Housing is an extra-wide hous...
View full details
Original price
$62.79
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Original price
$62.79
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$62.79
$62.79
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$62.79
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$62.79
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$62.79
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$62.79
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$62.79
$62.79
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$62.79
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$62.79
Hydronix HF45-10CLBK10 Water Filter Housing – 10” Big Blue (BB) Clear Housing, 1” Ports The Hydronix HF45-10CLBK10 is a 10" Clear Big Blue (BB) Wat...
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$62.79
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$62.79
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$62.79
$62.79
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$62.79
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$62.79
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$87.28
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$87.28
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$87.28
$87.28
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$87.28
Current price
$87.28
The Hydronix HF45-20CLBK15 (Note: Picture shows PR version, this one does not include the PR button) 20" Clear Filter Housing is an extra-wide hous...
View full details
Original price
$87.28
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Original price
$87.28
Original price
$87.28
$87.28
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$87.28
Current price
$87.28
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$40.19
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$40.19
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$40.19
$40.19
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$40.19
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$40.19
The Hydronix HF45-10BLBK34PR 10" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. This housing...
View full details
Original price
$40.19
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Original price
$40.19
Original price
$40.19
$40.19
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$40.19
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$40.19
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$39.67
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$39.67
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$39.67
$39.67
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$39.67
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$39.67
The Hydronix HF45-10BLBK10 10" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. It is made of ...
View full details
Original price
$39.67
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Original price
$39.67
Original price
$39.67
$39.67
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$39.67
Current price
$39.67
Original price
$52.49
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Original price
$52.49
Original price
$52.49
$52.49
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$52.49
Current price
$52.49
The Hydronix HF45-20BLBK34PR 20" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. This housing...
View full details
Original price
$52.49
-
Original price
$52.49
Original price
$52.49
$52.49
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$52.49
Current price
$52.49
Original price
$98.95
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Original price
$98.95
Original price
$98.95
$98.95
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$98.95
Current price
$98.95
The Hydronix HF45-20CLBK34 (Note: Picture shows PR version, this one does not include the PR button) 20" Clear Filter Housing is an extra-wide hous...
View full details
Original price
$98.95
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Original price
$98.95
Original price
$98.95
$98.95
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$98.95
Current price
$98.95
Original price
$39.67
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Original price
$39.67
Original price
$39.67
$39.67
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$39.67
Current price
$39.67
The Hydronix HF45-10BLBK34 10" Filter Housing is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. It is made of ...
View full details
Original price
$39.67
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Original price
$39.67
Original price
$39.67
$39.67
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$39.67
Current price
$39.67
Original price
$40.94
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$40.94
Original price
$40.94
$40.94
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$40.94
Current price
$40.94
The Hydronix HF45-10BLBK15PR (with Pressure Relief Button) filter housing accepts 10 x 4.5 inch filters and is ideal for use in residential, commer...
View full details
Original price
$40.94
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Original price
$40.94
Original price
$40.94
$40.94
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$40.94
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$40.94
Original price
$40.42
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$40.42
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$40.42
$40.42
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$40.42
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$40.42
The Hydronix HF45-10BLBK15 filter housing accepts 10 x 4.5-inch filters and is ideal for use in residential, commercial, and light industrial appli...
View full details
Original price
$40.42
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Original price
$40.42
Original price
$40.42
$40.42
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$40.42
Current price
$40.42
Original price
$72.95
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Original price
$72.95
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$72.95
$72.95
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$72.95
Current price
$72.95
Hydronix HF45-10CLBK15 Water Filter Housing – 10” Big Blue (BB) Clear Housing, 1.5” Ports The Hydronix HF45-10CLBK15 is a 10” Clear Big Blue (BB) W...
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Original price
$72.95
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$72.95
Original price
$72.95
$72.95
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$72.95
Current price
$72.95
