4-Inch Weep Hole Filter
Model #: JF4SS
Key Features
Large Capacity
A 4” diameter weep hole filter provides 20.79 gpmflow rate for applications demanding high performance especially during heavy rainfall and snow melt.
Rugged Stainless Steel
316-grade stainless steel construction resists rust, corrosion, and mechanical wear for extended service life.
Versatile Applications
Suited for retaining walls, seawalls, and flood-prone infrastructure where high-capacity drainage is critical.
Low Operating Costs
The 26 square inches of geotextile filter fabric also provide longer periods between maintenance. This reduces maintenance future costs by providing more soil filtration capacity.
4-Inch Weep Hole Filter Product Description


- Unmatched Surface Area and Water Flow
The conical design of our 4-inch weep hole filter provides 210% more filter fabric surface area than a traditional 4″ dia. weep hole. This increased surface area enables the filter to produce greater than 200% additional water flow, ensuring exceptional drainage performance. With 9 times the surface area of our 2.5″ dia. ABS filters and 1.5 times that of 3″ dia. units, the 4″ dia. units are the most versatile, suitable for virtually any application. - Efficient and Low Maintenance Design
Unlike traditional drainage systems, the 4-inch weep hole filter is designed for quick and easy maintenance. Its 26 in² filter surface area allows it to go longer between cleaning compared to smaller models, making it an ideal choice for environments where maintenance intervals may be extended. - Enhanced Longevity and Structural Protection
The 4-inch weep hole filter not only improves drainage efficiency but also enhances the longevity of retaining walls and seawalls by effectively preventing hydrostatic pressure buildup. This increased capacity helps protect structures from damage and costly repairs over time.
Size
4″
Face Plate
316L SS
Cage
316 L Stainless Steel perforated 1/4″ holes 5/16″ Staggered 16ga
Filter Media
Geotextile
Corrosion Resistance
316L Stainless Steel
Flow Rate
20.79 gpm*
Housing
316L SS
Ring Plate
316L SS
Filter Cartridge
UV Protected Black ABS
UV Protection
Filter Cartridge & Filter Media
Filter Fabric Surface Area
26.03 in²
High-Performance 4" Diameter Weep Hole Drainage Solution
The JF4SS 4-Inch Weep Hole Filter provides a 26.03 in² fabric surface area with a 4-inch diameter, ensuring superior water flow and efficient drainage. Its conical design offers over two times greater water flow than traditional piping systems, making it a perfect solution for large-scale drainage needs. Crafted from 316 stainless steel, this unit guarantees durability, corrosion resistance, and long-term performance. Easy to maintain, the removable cartridge simplifies cleaning and ensures longevity.

Notable Projects
Culvert Deep Creek Middletown DELDOT
This aging culvert demanded immediate attention to rectify drainage issues that were leading to damage and degradation of the culvert. In response, the Delaware Department of Transportation (DelDOT) pursued restoring the drainage functionality to the bridge culvert, using the innovative 4-inch weep hole filter from JET Filter System.
Chicago Kennedy Mainline Retaining Wall Drainage System
In a bid to enhance the structural integrity and prolong the life of a new retaining wall on the Kennedy Mainline in Chicago, Illinois, the Illinois Department of Transportation (IDOT) installed an innovative 4-inch weep hole filter drainage system that is changing the transportation industry.
Natchez Trace HWY Bridge Abutment Drainage Improvement
This bridge abutment drainage improvement project involved meticulous installation of 4-inch weep hole filter assemblies across various bridge abutments in Clinton, Jackson, and Canton, Mississippi, ensuring enhanced drainage and long-term structural integrity.
Questions? We've Got Answers!
Explore our frequently asked questions to learn how JET Filter System products address drainage, erosion control, and structural sustainability. Whether you’re tackling a retaining wall, marine project, or flood management, our innovative solutions are here to help.
Frequently Asked Questions
What are the key applications for the JF4SS?
The JF4SS is designed for retaining walls and stormwater drainage systems, offering effective filtration in environments prone to sediment buildup.
What differentiates the JF4SS from the JF3SS?
The JF4SS features a larger design, providing increased drainage capacity for projects requiring higher flow rates.
Is the JF4SS suitable for flood-prone areas?
Yes, its robust design and large drainage capacity make it highly effective in managing water flow in flood-prone regions.
What maintenance is required for the JF4SS?
Like other maintainable weep hole filters, the JF4SS requires periodic inspection and cleaning to ensure the filter remains free from debris.
How does the JF4SS contribute to environmental sustainability?
By preventing soil erosion and controlling sediment flow, the JF4SS helps preserve the surrounding environment and reduces the impact on adjacent water bodies.