UltraTech 9873 HydroKleen, 20" - 25" Recessed Frame
The UltraTech 9873 is the small-format recessed frame configuration of the Ultra-HydroKleen catch basin filter, custom-fitted for catch basins with drain openings between 20" and 25" in diameter. Designed for drains in known high-contaminant "hot spot" locations, the recessed frame seats flush within the catch basin ledge so the unit sits below grade, protecting it from traffic interference while maintaining full filtration performance. As a patented true filter verified by the EPA's ETV program, it forces stormwater through up to three separate filter chambers before discharge — removing hydrocarbons, heavy metals, sediments, phosphorous, nitrogen, and other organics from stormwater and industrial runoff.
- Recessed Frame for Small Catch Basins – Custom-fitted recessed frame seats flush within the catch basin ledge for drain openings between 20" and 25" (508 mm – 635 mm); available for round or square grate configurations with custom sizes available upon request
- True Multi-Stage Filtration – Patented separate-chamber design forces water through up to three different filter media bags before discharge, exceeding 80% sediment removal efficiency and targeting hydrocarbons, heavy metals, phosphorous, and other organics simultaneously
- Mix-and-Match Media Compatibility – Supports Sorb-44 (Part #9462), Activated Carbon (Part #9463), PhosFilter (Part #9461), and Heavy Metal Media (Part #9460); filter media bags are sold separately and must be ordered based on site-specific pollutant profile
- High-Flow Bypass System – Integrated bypass prevents ponding or flooding during high-flow storm events, maintaining full drainage function even when filter media approaches capacity
- Optional Sampling Capability – Compatible with the sampling option (Part #9876), which must be ordered with the unit at time of purchase and cannot be retrofitted; works with the Ultra-Universal Sampler (Part #8247, sold separately) for post-treatment effluent monitoring
- Model Number
- 9873
- Product Type
- Ultra-HydroKleen – 20" to 25" Recessed Frame
- Frame Type
- Recessed Frame – Sits Flush Within Catch Basin Ledge
- Fits Drain Openings
- 20" – 25" (508 mm – 635 mm)
- HydroKleen Body Dimensions
- 15" L x 19" W x 19" Deep
- Flow Rate with Overflow
- 135 ft³/min (1,000 gpm)
- Sediment Removal Efficiency
- Exceeds 80%
- Media Capacity
- 2–3 Media Filter Bags (Based on Catch Basin Size)
- Filter Media
- Sold Separately – Part #9462 / #9463 / #9461 / #9460
- Grate Compatibility
- Round or Square Catch Basin Grates – Custom Sizes Available
- Bypass System
- Yes – Prevents Flooding or Ponding During High-Flow Storm Events
- Sampling Option
- Available – Part #9876 (Must Be Ordered with Unit – Not Retrofittable)
- Color
- Green
- Recommended Maintenance
- Filter Media Replacement Every 6 Months (Varies by Pollutant Load)
- Compliance
- Supports NPDES 40 CFR 122.26 / EPA BMP / TMDL Requirements / EPA ETV Verified
- UPC
- 808416098730
- Country of Origin
- USA
- Brand
- UltraTech International
- Liftgate service required if the site has no loading dock.
- Driver will not move freight inside the building.
- Inspect and note damage on the delivery receipt before signing.
- Freight claims filed by us on your behalf within 48 hours.
- Residential and limited-access sites carry a carrier accessorial; we quote it before dispatch.
Common questions
Warehouse Gear Hub is an authorized national distributor of material handling and safety equipment. If your answer is not here, a specialist will pick up the phone.
Who is Warehouse Gear Hub?
An authorized national distributor of industrial equipment, material handling systems and regulatory safety solutions, supplying manufacturing facilities, commercial warehouses, government entities and small businesses nationwide.
We partner directly with the brands we carry, which is how we keep facilities compliant with OSHA and EPA standards without boutique pricing. Need a formal quote, volume pricing, or to buy on a corporate PO? Submit an RFQ and our team returns a customized quote within 2 business hours. Tax-exempt organizations should contact us before ordering so we can apply your status up front.
Reach a specialist directly on 1-800-794-1049, Monday to Friday, 8:00 AM to 4:00 PM CST. Emails received in business hours are answered within two hours.
What happens after I purchase?
You get an order confirmation straight away. An equipment specialist then reviews the order and confirms freight mode before anything is dispatched, so fit and delivery are checked by a person rather than just a cart.
Most orders ship within 3 to 5 business days and tracking is emailed the moment the unit leaves. Larger equipment travels by LTL freight to curbside, and the carrier calls you to arrange a delivery window. If your site has no loading dock, add liftgate service on the product page before checkout.
Is my product authentic and does it come with warranty?
Yes. Warehouse Gear Hub is an authorized distributor and we buy direct from the brands we carry, so every unit arrives new and genuine, backed by the manufacturer's own warranty. Nothing we sell is grey-market or refurbished.
Warranty terms are set by each manufacturer and vary by model, so rather than quote a blanket figure we print the exact term on the product's own page wherever one applies. Not every item carries a stated warranty. If you need coverage confirmed in writing before you order, call us and we will get it from the manufacturer.
What happens if there is a problem with my order?
Inspect the shipment before you sign for it. Note any damage on the delivery receipt, because that receipt is what a freight claim rests on and a clean signature makes damage far harder to recover.
Then call 1-800-794-1049 or email info@warehousegearhub.com with photos from several angles, and we file the freight claim on your behalf within 48 hours. If anything arrives missing or incorrect, tell us right away and we will put it right.
Eligible items can be returned within 30 days of receipt in their original packaging. Some products carry a restocking fee of up to 15% and return shipping is usually the buyer's; we confirm both before you commit to a return, so there are no surprises.
Where will my order ship from?
Direct from the manufacturer or their nearest regional distribution center rather than from one central warehouse. That is normally the shortest and cheapest route to your dock, though it does mean the origin depends on the brand and on where you are.
If you need the origin and transit time in advance, whether for scheduling receiving or booking a delivery appointment, ask when you request your quote and we will confirm both.
Can I get a discount if I pay via wire transfer or ACH?
Yes. Paying by wire transfer or ACH takes 2% off your order total, because it saves the card processing fees. On a 30,000 dollar machine that is 600 dollars back in your budget.
Request a quote or call 1-800-794-1049 and your specialist will issue the invoice with the 2% already applied.