Roof Downspout Filters

Prevent contamination from stormwater runoff with ADSORB-it® Roof Downspout Filters. Using BIOCHAR Media, our systems are designed to remove total and dissolved metals (aluminum, zinc, copper), total suspended solids (TSS) and organic pollutants. Our filtration systems ensure compliance with environmental regulations while protecting waterways.

ADSORB-it® Downspout Filter Models

ADF-50 (50-Gallon) – Compact & Efficient

Hi-Flow ADSORB-it® Filtration Fabric
Heavy-duty HDPE housing
Holds 150 lbs. of stormwater BIOCHAR filter media
TSS Removal: 99.4% | Captures sub-micron particles & organic matter
Designed for 3”, 4”, & 6” round or square downspout pipes
Flow Rate: 70+ GPM
Overflow protection & in-ground discharge connection

ADF-150 (150-Gallon) – Medium Capacity

Large-capacity sediment & metal adsorption
Holds 400 lbs. of stormwater BIOCHAR filter media
TSS Removal: 99.4% | Removes zinc from galvanized roofs
Flow Rate: 150+ GPM
Fits standard 3”, 4”, & 6” downspout pipes
Can integrate with an inlet reservoir tank for high-flow downspouts

ADF-250 (250-Gallon) – High-Performance

HDPE lightweight yet durable design
Holds 800 lbs. of metal-adsorbing BIOCHAR filter media
TSS Removal: 99.4% | Removes sub-micron particulates
Flow Rate: 100+ GPM
Overflow protection & in-ground discharge compatibility
Supports 3”, 4”, & 6” round or square downspout pipes

ADF-330 (330-Gallon) – Industrial Grade

Designed for large-scale stormwater filtration
Holds 1,200 lbs. of BIOCHAR filtration media
Removes TSS, sediment, zinc, copper, & organic pollutants
Flow Rate: 100+ GPM
Overflow & sample collection port options

ADF-1250 (1250-Gallon) – Maximum Capacity

Ideal for industrial buildings & large commercial facilities
Holds 3,500 lbs. of BIOCHAR filter media
Multi-stage filtration: Adsorption, Filtration & Ion Exchange
Flow Rate: 250+ GPM
High-volume inlet reservoir tank option
Custom outlet piping & sample collection ports available

Protect Waterways with Our Roof Downspout Filters

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