Pre Filter

HVAC Pre Filters (G1–G4 / MERV 6–8) for AHU & Projects | ZOSLONG Factory

Primary HVAC pre filters for AHU/RTU/MAU projects. Washable mesh, panel and pleated prefilters with custom sizes, low pressure drop options, and OEM support. Get a fast RFQ.

Antibacterial Panel Filter
HMA Antibacterial Panel Filter for Air Conditioning and Air Purification Equipment
HMA antibacterial panel filter made with polypropylene media for low resistance air filtration in air...
read more
Paint Booth Ceiling Filters
A Paint Mist Interception Solution for More Stable Airflow in Spray Booths
HBDPA ceiling paint mist filter cotton is an air filtration material specifically designed for roof-mounted air...
read more
High Efficiency Oil Mist Separate Filter
High Efficiency Oil Mist Separator for Fine Oil Mist Control in Industrial Air Systems

High efficiency oil mist separate filter designed for fine oil mist capture in industrial air...
read more
Washable Hood Grease Filter
Stainless Steel Hood Grease Filter for Kitchen Hood and Flue Purification

Washable stainless steel hood grease filter with removable structure, metal winding wire, and aluminum foil...
read more
Honeycomb Grease Filter
Washable Metal Grease Filter with Honeycomb Structure for Kitchen Exhaust Hood

Washable metal grease filter with honeycomb structure for kitchen exhaust hood and oil smoke...
read more
Mini Pleat HEPA Filter
H13/H14 Mini Pleat HEPA Filter for Clean Air Systems
H13/H14 mini pleat HEPA filter with fiberglass media, compact structure, and low resistance for cleanroom and clean air systems. Custom...
read more
Plastic Frame Synthetic Fiber Pleated Prefilter
Plastic Frame Synthetic Fiber Pleated Prefilter for HVAC and AHU Systems
Plastic frame synthetic fiber pleated prefilter for HVAC, AHU, and ventilation systems. Lightweight, low-resistance,...
read more
Micro Glass Fiber Separator Medium Filter
Micro Glass Fiber Separator Filter for AHU Medium and Fine Filtration

Micro glass fiber separator filter designed for AHU medium and fine filtration. Suitable for F5 to F8...
read more
G3 High Temperature Pleated Prefilter
High Temperature Pleated Prefilter for Oven and Thermal Process Air Systems
High temperature pleated prefilter for oven, drying, and coating air systems. Designed for primary-stage...
read more
20 Inch Pre Filter
20 Inch Pre Filter – Industrial-Grade Air Filtration for Demanding Applications

Our 20-inch pre-filter is specifically designed for HVAC systems in commercial and industrial...
read more
Cleanable Furnace Filter
✅ Cleanable Furnace Filter – Durable, Eco-Friendly & Cost-Effective

A cost-effective, eco-friendly alternative to disposable filters with our cleanable furnace filter. Built...
read more
Synthetic Fiber Filter
Durable Synthetic Fiber Filter | Pre-Filtration for HVAC Systems
High-performance synthetic fiber filter for HVAC systems. Efficient coarse particle capture, low resistance, and long...
read more

First 12 3 4 Last

Our Best-Selling Pre Filter Types

Washable Air Filter

Washable air filters can be rinsed with water or vacuumed to remove any particle buildup. Washable air filters are typically made out of woven polypropylene media and are electrostatically charged in order to capture more particles.

Panel Filter

Panel filters are a type of filter used in HVAC (heating, ventilation & air conditioning) systems. They're installed in a panel near the blower unit and work to remove dust and other debris from the air before it is circulated through the building's ductwork system.

Pleated Filter

Pleated filters are made from pleated cloth or paper that is pleated or folded in a series of small pleats, which help to increase the filter's surface area and capture more particles. This type of filter is often used in air conditioning systems, air purifiers, and other indoor air quality devices.

Why Choose Us

Advanced Equipment

We are equipped with clean room production lines, advanced R&D centers and precision testing equipment.

Professional Team

We have formed an experienced and skilled professional team to ensure that our products and services always maintain the leading level in the industry.

Patent Certificate

We have successfully obtained ISO 9001:2015 quality management system certification and comply with ISO 9001 standards, EN 779:2012 regulations and CE marking requirements.

Quality Control

We implement strict control on product quality to ensure that each product meets high quality requirements.

Pre Filter Technical Parameters

Size :	610 x 610 x 50/100 / 150 mm
Type :	Box / Flange Type
Filtr. Level :	90% Down to 10 Micron
Initial Pressure Drop :	3 mm of W.G.
Final Pressure Drop :	15 / 20 mm of W.G.
Frame :	G.I. / Cardboard
Media :	HDPE / Synthetic Fibre

Pre Filter Advantages

Lower pressure drop

Easy to install in wide range of HVAC systems

High moisture resistant

Cost saving with lower energy consumption

Environment friendly

To extend life span on final filtration

Common Materials Used for Pre Filter

Polyester:

Provides good filtration.

Fiberglass:

Durable material with reasonable efficiency for the price.

Foam:

Can trap large particles, some models are washable and reusable.

Mesh screens:

Allows high airflow while catching large debris.

Pleated filters:

Offer more surface area for higher particle capture than flat filters.

The Role of Pre Filter

Protect the main filters:

By trapping hair, dust and other large particles, pre-filters help maintain airflow through the system and prevent clogging of the HEPA, activated carbon and other filters.

Improve air quality:

Pre-filters do capture many large airborne particles that can irritate allergies and asthma. While they allow smaller particles like smoke and pollen to pass through, pre-filters still contribute to cleaning indoor air.

Applications of Pre Filter

HVAC systems:

To protect expensive HEPA filters or other fine filters in commercial and residential settings.

Air purifiers:

To extend the lifespan of the main filter by catching larger particles.

Vacuum cleaners:

To prevent larger debris from clogging the vacuum’s motor.

Our service

Pre-sales Service:

Needs Analysis:

Communicate to understand customer requirements and goals.

Product Consultation:

Provide product details for customers to choose suitable options.

Solution Design:

Create personalized solutions based on needs.

Cost Estimation:

Offer transparent cost estimates and quotations.

Sample Provision:

Provide samples for customer testing when needed.

During Sales Service:

Order Tracking:

Ensure timely and accurate order processing with status updates.

Production Supervision:

Monitor production to ensure quality standards are met.

Logistics Coordination:

Arrange logistics for on-time and safe delivery.

Technical Support:

Offer support for installation and configuration questions.

After-sales Service:

Installation Guidance:

Provide professional installation guidance.

Operational Training:

Train customers to skillfully use products.

Maintenance Services:

Regularly offer maintenance and inspection services.

Fault Response:

Respond quickly to malfunctions with solutions or on-site services.

Spare Parts Supply:

Provide necessary spare parts for continuous operation.

Customer Feedback:

Collect feedback to improve products and services.

Packaging and Delivery

Packaging	Anti-corrosion film + reinforced wooden crates
Delivery	DDP/DAP options with real-time tracking

Our Certificate

FAQ

Q: What is the function of a pre-filter?

A: Regardless of the material, the primary function of a pre-filter is to trap larger particles before they reach the more advanced filters in the purification system.

Q: Why is a pre filter recommended?

A: A pre-filter is used to filter dust, pollen, fibres, and other visible impurities before further purification by other filters. This filter also prevents these physical impurities from clogging the purifier, thus extending the life of your purifier.

Q: Do pre-filters restrict airflow?

A: Protect the main filters - By trapping hair, dust and other large particles, pre-filters help maintain airflow through the system and prevent clogging of the HEPA, activated carbon and other filters.

Q: What is the principle of pre filter?

A: Comprising densely woven materials like fiberglass, polyester, or cotton, pre-filters create a barrier through which air passes. As air flows through the pre-filter, larger particles are unable to penetrate the fibres and are thus captured, both on the surface and within the depth of the filter media.

Q: How does a pre-filter work?

A: A pre-filter is a filtering device that removes large particles from the air before it reaches the main filter, including dust, hair, insects, pollen, and various fibers.

We're professional pre filter manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized pre filter from our factory.

activated charcoal filter bags, Disposable Panel Filters