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Home > Industrial Equipment & Components > Filtration Equipment & Parts > Filter Bag & Cartridge > Pre-filter With 2-Year Warranty, Mill Test Report Available, ISO 9001 Compliant Production

Pre-filter With 2-Year Warranty, Mill Test Report Available, ISO 9001 Compliant Production

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Pre-filter With 2-Year Warranty, Mill Test Report Available, ISO 9001 Compliant Production photo-4

Pre-filter With 2-Year Warranty, Mill Test Report Available, ISO 9001 Compliant Production photo-5

Product Spotlights

Our pre-filter combines a 2-year warranty, ISO 9001 compliant production, and Mill Test Report availability. With customizable sizes, high dust-holding capacity, and low resistance, it protects HVAC equipment and reduces energy costs. Backed by a factory established in 1998 with global exports, we offer reliable quality and flexible logistics.

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

Get Latest Price

Material:

Other, Fiberglass / Synthetic media

Size:

Customizable, standard 20x20x1 inch

Filtration Efficiency:

G4 to MERV 8 (optional)

Contact Supplier Request Quote Chat Now

Anping County Boli Hardware Wiremesh Products Factory

2Yrs

Payment & Shipping

Payment Methods:

Port of Shipment:

tianjin shanghai qingdao

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
Contact Us

Material Other, Fiberglass / Synthetic media

Size Customizable, standard 20x20x1 inch

Filtration Efficiency G4 to MERV 8 (optional)

Frame Material Aluminum / Galvanized steel / Cardboard

Operating Temperature Up to 100°C (212°F) continuous

Color White / Blue / Custom

Application HVAC systems, air handling units, industrial ventilation

Warranty 2 years

Compliance ISO 9001 compliant production

Available Reports Mill Test Report upon request

As a professional manufacturer established in 1998, Anping County Boli Hardware Wiremesh Products Factory has been dedicated to producing high-quality filtration solutions for over two decades. Our Pre-filter with 2-Year Warranty is engineered to deliver reliable air intake protection for HVAC systems, air handling units, and industrial ventilation equipment. With an annual export value of US$5-10 million and a global market presence spanning North America, Europe, Asia, and beyond, we combine cost-effective production with rigorous quality control. Each pre-filter is manufactured under ISO 9001 compliant processes, and we provide Mill Test Reports upon request to ensure transparency and performance verification.

This pre-filter is designed to trap larger airborne particles such as dust, pollen, lint, and fibers, extending the life of downstream high-efficiency filters and protecting HVAC equipment. Available in a wide range of standard and custom sizes, it offers a balance of high dust-holding capacity, low resistance, and durable construction. Whether you need a washable or disposable option, our pre-filters are built to meet the demands of commercial, industrial, and residential applications.

Key Features & Technical Specifications

Robust Construction: Choice of fiberglass or synthetic media bonded to a strong backing, with frames in aluminum, galvanized steel, or high-strength cardboard.
High Dust-Holding Capacity: Media design optimized for capturing coarse particles up to 5-10 microns, reducing maintenance frequency.
Low Air Resistance: Initial pressure drop typically below 30 Pa (at rated airflow), ensuring energy-efficient system operation.
Wide Operating Temperature Range: Continuous operation up to 100°C (212°F) without degradation.
2-Year Warranty: Covers manufacturing defects, demonstrating our confidence in product durability.
Mill Test Report Available: Each batch can be tested for filtration efficiency, pressure drop, and material integrity – data shared upon request.
ISO 9001 Compliant Production: Our factory follows strict quality management procedures, from raw material sourcing to final packaging.
Customizable Options: Size, media type, frame material, and color can be tailored to your specific requirements.

Parameter	Standard Specification	Notes
Media Type	Synthetic / Fiberglass	Fiberglass for high temperature, synthetic for washable options
Filtration Class	G4 (EN 779) / MERV 7-8 (ASHRAE 52.2)	Higher efficiency classes available on request
Initial Pressure Drop	≤ 30 Pa @ 2.5 m/s face velocity	Exact value depends on media density and thickness
Recommended Final Pressure Drop	150 Pa	Replace when resistance reaches this level
Operating Temperature	-20°C to +100°C	Continuous; intermittent peaks up to 120°C possible
Frame Material Options	Aluminum / Galvanized steel / Cardboard	Aluminum for moisture resistance; cardboard for cost savings
Standard Sizes (inches)	12x24x1, 16x25x1, 20x20x1, 20x25x1, 24x24x1	Custom sizes up to 48x48x4 available
Warranty	2 years	Covers defects in material and workmanship

Benefits for Your Business

Extended Equipment Life: By capturing coarse particles before they reach sensitive components, this pre-filter reduces wear on fans, coils, and high-efficiency filters.
Lower Maintenance Costs: High dust-holding capacity means fewer replacements and less labor for filter changes.
Energy Savings: Low initial pressure drop minimizes fan energy consumption, contributing to lower operational costs.
Flexible Sourcing: With production facilities in Hebei, China and multiple shipping ports (Tianjin, Qingdao, Shanghai, Foshan), we offer competitive lead times and logistics support.
Quality Assurance: Every production batch is traceable, and Mill Test Reports provide factual data for your compliance records.

Since 1998, our factory has supplied pre-filters to customers across North America, South America, Europe, Asia, Africa, and Oceania. Our annual export value of US$5-10 million reflects the trust global buyers place in our products. We maintain a dedicated quality control team that monitors each step of production, from raw material inspection to final packaging. The 2-Year Warranty is a testament to our commitment – if you experience any manufacturing defect, we will replace the product promptly.

We encourage you to request a Mill Test Report with your order to verify filtration efficiency and pressure drop values. Our ISO 9001 compliant production system ensures consistent quality, batch after batch. Contact us today to discuss your specific requirements – we can provide samples, custom sizes, and tailored packaging. Let us be your reliable partner for air filtration solutions.

Frequently Asked Questions

What is the warranty period, and what does it cover?
The pre-filter comes with a 2-year warranty covering manufacturing defects in materials and workmanship. It does not cover damage caused by improper installation, excessive pressure drop, or chemical exposure.
Can I get a Mill Test Report for my order?
Yes, Mill Test Reports are available upon request before shipment. They include data on filtration efficiency, pressure drop, and material composition for the specific batch.
What filtration efficiency does this pre-filter offer?
Standard efficiency is G4 (EN 779) or MERV 7-8 (ASHRAE 52.2), suitable for capturing particles larger than 5-10 microns. Higher efficiency (up to MERV 13) can be customized.
Is this pre-filter washable or disposable?
Both options are available. Media made of synthetic fiber can be washed multiple times; fiberglass media is typically disposable. Please specify your preference when ordering.
What sizes do you offer?
We stock standard sizes like 20x20x1, 16x25x1, and 24x24x1 inches. Custom sizes up to 48x48x4 inches are available with minimum order quantities.
How do I install the pre-filter in my HVAC system?
The pre-filter fits into standard filter slots or racks. For frame types with flanges, slide into the holding frame. Ensure the airflow direction arrow matches the system flow.
What is the typical lead time for orders?
For standard sizes, lead time is 10-15 days after order confirmation. Custom sizes may require 20-25 days. We ship from Tianjin, Qingdao, Shanghai, or Foshan ports.
Can I get a sample before bulk order?
Yes, samples are available. Please contact our sales team with your size and media preference. Sample cost is applicable but will be deducted from the first bulk order.