WISY Garden Rainwater Filter Collector

Easily turn your vertical downspout into a rainwater collection point. With up to 95% capture rate, the WISY Garden Downspout Filter separates debris from rainwater and redirects the clean water to your rain barrel or storage tank. Leaves, sediment, and remaining runoff continue on through the downspout.

Each unit handles up to 1,100 square feet of roof area, and multiple filters can be placed around the house for full coverage. Collected rainwater can be used for irrigation, vehicle washing, and a wide range of non-potable applications. The self-cleaning design keeps water flowing freely with no restrictions, even in heavy storms.

This filter connects directly to round metal and plastic downspouts. A converter kit is required for rectangular downspouts (available in 2x3 or 3x4). Select your size before adding to cart.

Kit includes: 

• Mounting clip & screw
• Hose & tension ring
• Downspout converter

Key Specs: Stainless steel construction | 440 micron mesh | Up to 95% rainwater capture | Max flow 66 GPM | 1,100 sq. ft. roof capacity | 2" outlet | Frost-proof

Features and Benefits

High-Efficiency Filtration

• 440 micron stainless steel mesh blocks leaves, granules, and sediment
• Captures up to 95% of incoming rainwater
• Full pipe diameter preserved, keeps water moving even in heavy rain
• First-flush function rejects the dirtiest initial runoff
  

Low-Maintenance, Self-Cleaning Design

• Self-cleaning action flushes debris downward during rainfall
• Smooth mesh surface resists particle buildup
• Dishwasher-safe filter insert
• Only needs attention a few times per year
• Mesh filter slides out without tools

Durable, Weather-Resistant Construction

• Stainless steel housing and filter screen
• Frost-proof for year-round outdoor use
• No coatings to peel or chip

Flexible Installation Options

• Fits round metal and plastic downspouts in multiple sizes
• Converter kits available for 2x3 and 3x4 rectangular downspouts
• 2" outlet accepts a 90-degree elbow or optional flexible hose
• Above-grade mounting for easy access and sewer backflow protection
• Remove the insert to use as a simple rainwater diverter

Practical Sizing for Residential Use

• Up to 1,100 square feet of roof area per unit
• Add multiple units for larger roofs
• Great for irrigation, vehicle washing, and non-potable applications

Specifications

Performance

• Maximum roof area: 1,100 sq. ft. per unit
• Maximum flow rate: 66 GPM
• Filter mesh size: 440 microns
• Filter insert height: 4-1/8"

Construction

• Housing material: stainless steel
• Filter insert material: stainless steel mesh (440 micron)
• Filter insert: dishwasher safe
• Frost-proof: yes

Connections

• Outlet size: 2"
• Outlet connection: 90-degree elbow or optional 1" flexible hose (2" connection)
• Compatible downspout types: round metal and round plastic

Downspout Compatibility (internal diameter, metal)

• 3"
• 3-1/8"
• 3-1/2"
• 4"

Downspout Compatibility (external diameter, plastic)

• 2-15/16"
• 4-1/3"

Converter Kits (rectangular to round)

• 2" x 3" downspout kit
• 3" x 4" downspout kit

Dimensions

• Width: 4-3/4"
• Depth: 7"
• Height: 11-1/4"

Installation Requirements

• Must be mounted plumb (vertical)
• Requires minimum 20" of vertical round pipe above the filter when using a converter kit
• Roof areas exceeding 1,100 sq. ft. require an additional filter or larger capacity unit

What's Included

• Stainless steel filter housing
• 440 micron stainless steel mesh filter insert

Parts & Accessories

Installation Accessories

• Mounting clip and screw (SF 0310)
• 1" flexible hose with 2" connection (15803)
• Downspout converter 2x3 (DSCK 2x3) or 3x4 (DSCK 3x4)

Optional Add-Ons

• Blind insert (15802)

Downloads

Spec Sheet

Videos