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Flame-Retardant Pleated Paper-Frame Air Filter for Containerized Data Centers and Equipment Enclosures

Flame-Retardant Pleated Paper-Frame Air Filter for Containerized Data Centers and Equipment Enclosures

Features

  • Designed for container-type data center air intake and ventilation systems
  • Available in G3 and G4 primary filtration grades
  • Flame-retardant synthetic fiber filter media
  • Moisture-resistant paperboard frame
  • Pleated structure provides a large effective filtration area
  • High dust-holding capacity for extended operating intervals
  • Low initial pressure drop supports stable cooling airflow
  • Captures dust, fibers, lint and other coarse airborne particles
  • Helps protect servers, fans, heat exchangers and electrical components
  • Lightweight construction simplifies installation and replacement
  • Suitable for disposable filtration and scheduled maintenance programs
  • Standard sizes and project-specific customization available
  • OEM production supported for data center equipment manufacturers

Fast Sampling Support

Samples ready within 3–7 days for custom OEM & ODM orders. Flexible customization solutions are available to match your unique product requirements.

Advanced Production Equipment & Stable Quality

Equipped with professional automated production lines and sophisticated testing machinery, enabling consistent, reliable product quality across all batches.

Mass Production & On-Time Shipment

Efficient full-scale manufacturing capacity ensures finished goods can be delivered within 15–20 working days, guaranteeing punctual shipment schedules.

ISO Standard Strict Quality Control

All production follows strict ISO 9001 standards. Each shipment carries a complete quality inspection certificate to satisfy factory release specifications.

Description

Containerized data centers rely on continuous ventilation and cooling to control heat generated by servers, power distribution systems, communication equipment and battery units. When outdoor air is introduced into the container, airborne dust and fibers may accumulate on cooling coils, fans, circuit boards and electrical components.

The foldaway paper-frame pre-filter provides an economical first-stage filtration solution for these systems. Its pleated synthetic fiber media increases the available filtration area without significantly increasing installation depth. This helps maintain the airflow required by cooling equipment while intercepting coarse contaminants before they enter sensitive areas.

The product is particularly suitable for projects requiring:

  • Lightweight disposable filters
  • Frequent filter replacement
  • Low initial airflow resistance
  • Compact installation depth
  • Large-volume air handling
  • OEM-sized intake filters
  • Cost-effective primary filtration

For dusty outdoor environments, the filter can be installed upstream of medium-efficiency or fine filters to reduce downstream dust loading and extend overall system service life.

Technical Parameters

Model Size (mm) Rated Airflow (m³/h) Initial Pressure Drop (Pa) Final Pressure Drop (Pa) Average Arrestance
HF-ZD-G3 595 × 595 × 46 3,200 35 250 85%
HF-ZD-G3 495 × 595 × 46 2,700 35 250 85%
HF-ZD-G3 295 × 595 × 46 1,600 35 250 85%
HF-ZD-G3 495 × 495 × 46 2,200 35 250 85%
HF-ZD-G4 595 × 595 × 46 3,200 42 250 95%
HF-ZD-G4 495 × 595 × 46 2,700 42 250 95%
HF-ZD-G4 295 × 595 × 46 1,600 42 250 95%
HF-ZD-G4 495 × 495 × 46 2,200 42 250 95%

Standard Model Options

Item Description
Product Name Foldaway Paper-Frame Pre-Filter
Product Type Pleated Disposable Panel Air Filter
Model Series HF-ZD-G3 / HF-ZD-G4
Filtration Grade G3 / G4
Filter Media Flame-Retardant Synthetic Fiber
Frame Material Moisture-Resistant Paperboard
Structure Pleated Media with Paper-Frame Support
Standard Depth 46 mm
Main Function Primary Air Filtration
Airflow Characteristic High Air Permeability
Pressure-Drop Characteristic Low Initial Resistance
Dust Capacity High Dust-Holding Capacity
Installation Position Outdoor Air Intake or First-Stage Filtration Section
Primary Application Container-Type Data Center Ventilation
Replacement Type Disposable
Custom Sizes Available
OEM / ODM Supported

Applications

Container-Type Data Centers Cooling and Fresh-Air Modules Power and Electrical Containers OEM Equipment Integration
Used as the first-stage air filter in modular and containerized data centers to reduce the entry of dust, fibers and outdoor debris into server and network equipment areas. Installed at fresh-air inlets, ventilation grilles and cooling-unit intake sections to protect fans, coils, heat exchangers and downstream filters. Suitable for substations, UPS containers, battery energy storage systems, generator enclosures and electrical control cabinets requiring continuous filtered airflow. Developed for data center manufacturers, HVAC integrators, enclosure suppliers and filtration distributors requiring lightweight standard or customized replacement filters.

Container-Type Data Center Filtration Functions

Cooling Airflow Protection Equipment Contamination Control Downstream Filter Protection Maintenance Cost Management
The low initial pressure drop helps maintain the airflow required by server cooling and container ventilation systems. Coarse particles are intercepted before reaching electronic components, fan assemblies and heat-transfer surfaces. Used as a pre-filter to reduce the particle load on medium-efficiency and fine filtration stages. Lightweight disposable construction supports fast replacement and standardized preventive-maintenance programs.

Customization & Quality Control

Customization Available Quality Inspection
• Custom filter width, height and depth
• G3 or G4 media configurations
• Project-specific airflow and resistance design
• Different pleat counts and media areas
• Flame-retardant media options
• Frame thickness and structural adjustment
• Compatibility with container air-intake modules
• Replacement development from drawings or samples
• Custom product labels, model numbers and barcodes
• Private-label and neutral packaging options
• Bulk OEM production for data center integrators
• Incoming inspection of media and frame materials
• Filter dimension and squareness verification
• Pleat count and pleat-spacing inspection
• Media bonding and frame assembly checks
• Initial pressure-drop testing
• Airflow performance verification
• Filtration efficiency testing upon request
• Flame-retardant material verification upon request
• Visual inspection for media damage or deformation
• Packaging and labeling inspection
• Batch identification and production traceability
• Pre-shipment random sampling

Product Details

G3/G4 Paper-Frame Pre-Filter G3/G4 Paper-Frame Pre-Filter G3/G4 Paper-Frame Pre-Filter
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