Nantong Deli is a specialized OEM manufacturer of High Air Flow (HAF) filters for the water damage restoration and structural drying industry. We supply restoration fleet managers, HVAC wholesalers, and equipment OEMs with high-capacity electrostatic filters designed for LGR (Low Grain Refrigerant) dehumidifiers.
Why HAF Filters are Critical for Water Damage Restoration
In high-moisture structural drying environments, standard pleated MERV filters often fail due to:
- High Pressure Drop: Restricting airflow to the dehumidifier's evaporator coils, leading to icing and reduced water removal (GPD).
- Moisture Loading: Traditional paper-based media loses structural integrity when saturated.
- Low Dust Capacity: Restoration sites are often dusty; a clogged filter can burn out an LGR compressor.
The NT Deli HAF Solution:
Our HAF filters utilize a frameless, self-supporting electrostatic media. The open-channel structure allows for maximum airflow (low initial pressure drop) while the electrostatic charge actively pulls particles from the air stream.
- Airflow: Rated for 250+ CFM applications.
- Resistance: Initial pressure drop < 0.15" w.g.
- Durability: 100% synthetic media — will not mold or degrade in 100% RH environments.
Fleet Compatibility — LGR Dehumidifier Filters
| Equipment Brand | Compatible Models | OEM Part # | Deli Part # |
|---|---|---|---|
| Dri-Eaz | LGR 7000Li, LGR 2800i, LGR 3500i | F284 | DL-HAF-F284 |
| Dri-Eaz | Revolution LGR, 1200, 2000 | F372 | DL-HAF-F372 |
| Phoenix | R200S, R250, DryMAX, DryMAX XL | 4024935 | DL-HAF-PH200 |
| Alorair | Storm SLGR 1600X, Storm LGR 85 | — | DL-HAF-AL16 |
| Abestorm | Decovent Series | — | DL-HAF-AB10 |
| Dri-Pod | Floor Dryer / Air Mover | F451 | DL-HAF-DP451 |
B2B Wholesale & OEM Support
We understand the requirements of high-volume restoration supply chains:
- Bulk Packaging: Standard 24-pack or 50-pack cartons optimized for warehouse storage and shipping.
- Private Labeling: Your brand logo printed directly on the filter pull-tabs and custom-branded packaging.
- Global Compliance: ISO 9001:2015 certified production, RoHS and REACH compliant materials for North American and European markets.
- Lead Times: 15–20 days for standard fleet orders; 7-day expedited shipping available for disaster response stock-outs.
Technical Specifications
| Parameter | Performance Value |
|---|---|
| Media Type | Electrostatic High Air Flow (HAF) Synthetic |
| Airflow Rating | 250–500 CFM (model dependent) |
| Initial Resistance | < 0.15 in. w.g. @ 300 FPM |
| Efficiency | Effectively captures dust, debris, and mold spores |
| Construction | Frameless, ultrasonically welded seams |
| Operating Temp | Up to 150°F (65°C) |
| Chemical Resistance | Resists standard antimicrobial cleaning agents used in restoration |
Frequently Asked Questions
Can I get a custom size HAF filter for our own dehumidifier brand?
Yes. We provide full OEM engineering support. Provide your internal cavity dimensions and target CFM, and we will produce samples for testing in 10 days.
Do you ship directly to restoration franchises (Servpro, ServiceMaster, etc.)?
We primarily supply regional distributors and equipment wholesalers. However, for fleet orders above 500 units, we can arrange direct factory-to-warehouse shipping.
What is the shelf life of the electrostatic charge?
While how long HAF filters last in restoration work depends on job site dust, our filters maintain their effective electrostatic charge for up to 2 years in original sealed packaging.