What is the efficiency of the G4 filter?

G4 grade filter has 90% efficiency for 5um(micron) filter.

What are the maintenance requirements for the filter?

After cleaning, if initial resistance is lower than first time, replace it. Replace if pressure difference is greater than initial value after two cleanings. Do not rub, machine wash or shake dry.

Pre Pleated Clean Room Medium Panel Air Filter for Clean Room

Name: Pre Pleated Clean Room Medium Panel Air Filter for Clean Room
Brand: Sichuan Huajie Purification Equipment Co., Ltd
SKU: 2092247865

Sichuan, ChinaSichuan Huajie Purification Equipment Co., Ltd

US$7.12

20-99 Pieces

US$7.06

100-499 Pieces

US$7.02

500-999 Pieces

US$6.97

1,000-9,999 Pieces

US$6.12

10,000+ Pieces

Sample price:US$12.99/piece.Request sample

Product profile

Customization

Available

Clapboard

without Clapboard

Filter Number

Model NO.

390*390*46mm

Medium Material

Cotton

Efficiency

Filtration Grade

Pre Filter

Type

Panel Filter

Color

White

Frame

Aluminum Alloy Frame

Shape

Rectangle

Porosity

5um

Feature

Easy

Transport Package

Carton Package

Specification

390*390*46mm

Trademark

trairf

Origin

China

HS Code

8421399000

Production Capacity

10000 Piece

Key features

High Efficiency G4 Grade: Achieves 90% efficiency for 5um particles with cotton or nylon media.

Customizable Dimensions: Available in multiple standard sizes from 295x295mm to 595x595mm.

Aluminum Alloy Frame: Durable frame construction ensures structural integrity and low resistance.

Lightweight Design: Economical and easy to handle with large filter area for high air volume.

ISO9001 & CE Certified: Products meet international quality standards for reliable performance.

Fast Delivery Time: Short delivery time of 7-10 days based on strong production capacity.

OEM Service Experience: Over 10 years of experience providing OEM services in the air filter field.

Versatile Applications: Suitable for clean rooms, HVAC systems, medical electronics, and laboratories.

Company profile

Self-brandedCustomization from DesignsStandardized quality controlHigh Repeat Buyers Choice

Sichuan Huajie Purification Equipment Co., Ltd

Sichuan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2017-11-13Nearest Port: Shanghai,Shenzhen,NingboAverage Response Time: ≤8.21hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryThe supplier operates in metal structures, refrigeration, and air-conditioning equipment, with manufacturing, sales, research and development, and import/export activities. It reports ISO9001:2015 and CE certifications, documented complaint handling, quality assurance, raw-material traceability, and OEM service for well-known brands. Customization is available from designs or samples, including full, minor, and flexible customization. Production includes four lines, but the factory does not continuously reconcile quantities for each batch. Innovation evidence is limited: one R&D engineer and no new products launched in the previous year. Financial information is incomplete because only reference years are provided, without financial results or indicators. The supplier has export capability and reported repeat-buyer preference of 80%–100%, but no Fortune 500 cooperation and no overseas service-country coverage are stated.

Supplier typeThe supplier is a manufacturer and seller of metal structures, refrigeration, and air-conditioning equipment, with mechanical equipment R&D and import/export activities. It has four production lines, self-operated import/export rights, and export-trade staff, supporting classification as a manufacturing supplier with trading and engineering capabilities.

CertificationsThe supplier reports ISO9001:2015 management-system certification and CE product compliance certification. These certifications are explicitly stated in the company and certification information, although the company description also references an older ISO9001:2008 claim.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records and a corrective and preventive action procedure with records. However, overseas service coverage is listed as zero, so the evidence supports structured complaint handling but not broad overseas service availability.

Production capacityThe supplier has four production lines, uniformly followed finished-product inspection instructions, quality assurance, and raw-material traceability. A deficiency is that the factory does not continuously reconcile quantities for each batch or batch-production volume, indicating a control gap in production quantity management.

Customization capabilityThe supplier explicitly offers customization from designs and samples, full customization, minor customization, and flexible customization. This directly demonstrates broad customization support.

Client casesThe supplier states that it has served many customers, including well-known brands, and provides OEM services for popular brands. It also reports repeat-buyer preference of 80%–100%, but no Fortune 500 cooperation and no named customer cases are provided.

Product Q&A

Q:Who are we?

We are based in Sichuan, China, start from 2013, sell to Africa, North America, Southeast Asia, Eastern Europe, South America, Mid East, South Asia, Southern Europe, Northern Europe, Central America, Western Europe, Domestic Market, Oceania, Eastern Asia. There are total about 51-100 people in our office.

Q:How can we guarantee quality?

Always a pre-production sample before mass production; Always final Inspection before shipment.

Q:What can you buy from us?

HEPA Filter, Pre Filter, Medium Pocket Filter, HVAC Air Filter, FFU Fan Filter Unit.

Q:Why should you buy from us not from other suppliers?

1). Turth Factory Supply you with Factory Price 2). 7-10 days Short Delivery Time base on Strong Producing Strength 3).With more than 10 Year OEM Service Experience in Air Filter Field 4). Products Quality are Guaranteed with ISO9001 & CE Certificate.

Q:What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW; Accepted Payment Currency:USD,EUR,JPY,CAD,AUD; Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow; Language Spoken:English,Chinese,Spanish,Japanese,German,Arabic,French,Russian,Korean,Italian.