Box Filter
Your Professional Box Filter Supplier!
Xiamen Zhongxinglong Air Conditioning Equipment Co., Ltd., established in 1997, is committed to being a leader in the global air conditioning equipment sector. As a privately-owned high-tech enterprise with the right to independent import and export, our products are distributed worldwide, serving customers in every corner of the globe. Our products include Air Grilles and Diffusers, Dampers and Duct Systems, HVAC Air Filters, Ducts and Accessories.
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Return Air Plenum Filter BoxReturn Air Plenum Filter Box: Precision-Engineered Airflow Managementread more
ISO 9001-certified manufacturing process.
Material: 22-24 gauge galvanized steel (standard) / 6061 aluminum... -
Air Filter Housing BoxAir Filter Housing Box: Robust Modular Filtration for Industrial Applicationsread more
The Air Filter Housing Box is a modular, heavy-duty filtration system designed for industrial environments... -
Return Air Filter BoxReturn Air Filter Box: Precision-Engineered HVAC Protectionread more
Designed for clean air systems, our return air filter box offers exceptional particle retention and extended service life. With... -
Hvac Filter BoxHVAC Filter Box for AHU Retrofits and Multi-Stage Duct Filtrationread more
Serviceable HVAC filter box for AHU, MAU, RTU, and duct retrofit projects. Built for multi-stage filtration, proper sealing,... -
Ceiling Return Air BoxCeiling Return Air Box for Room-Side Filter Access in Suspended Ceilingsread more
Ceiling return air box designed for suspended ceilings, corridor returns, and room-side filter replacement. A... -
Sub-high Efficiency FilterF7 F8 F9 Box Filter for AHU | Medium Efficiency HVAC Filterread more
F7 F8 F9 box filters for AHU intermediate filtration, commercial ventilation upgrades and HVAC replacement projects. Custom... -
Pleat Box FilterV-Type Box Air Filtersread more
Our V-shaped box air filter is a high-performance and durable filter that can be used in industrial, commercial, and HVAC systems. It is particularly effective in... -
Plenum Filter BoxPlenum Filter Box for Ceiling Void Installations and Compact Supply Air Projectsread more
Compact plenum filter box for ceiling voids, terminal air supply, and retrofit duct projects. Designed for... -
Media Filter BoxHigh-Performance Media Filter Boxesread more
Our Media Filter Boxes provide efficient air filtration for industrial and commercial use, ensuring clean and safe air. Durable with easy maintenance and...
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.
Our Best-Selling Box Filter
Air Filter Housing Box
This air filter housing box integrates multiple filter stages (e.g., pre-filters, HEPA modules) within a corrosion-resistant galvanized steel or powder-coated aluminum casing. Its modular design allows easy expansion or component replacement, minimizing downtime. The airtight sealing system ensures zero leakage, while reinforced brackets withstand pressures up to 3,000 Pa.
Ceiling Return Air Box
Discover our top - tier box - type air filters for HVAC and industrial use! They trap dust and impurities, delivering clean air and boosting system efficiency. These budget - friendly filters offer easy installation and upkeep, protecting your equipment and enhancing air quality.
Media Filter Box
Our Media Filter Boxes are designed for high - efficiency air purification. Built with durable materials and advanced filtration media, they effectively capture airborne particles like dust, pollen, and harmful gases. They provide high - quality air filtration for industrial and cleanroom environments, meeting your exact needs.
Box Filter Technical Parameters
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Parameter |
Details |
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Standard Sizes |
14x20", 16x24", 20x25" (Customizable) |
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Pressure Rating |
Up to 2.0" w.g. static pressure |
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Accessories |
Hinged access doors, slide tracks |
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MOQ |
50 Units (supports trial orders) |
Box Filter Advantages
High Filtration Efficiency:
Ensures air quality.
Low Filtration Cost:
Achieves more filtration work over a longer period.
Adjustable:
Allows for adjustments in filtration precision according to actual needs.
MERV Ratings for Box Filters

MERV 1-4:
These filters provide a basic level of filtration at low cost.

MERV 13-16:
These filters are of high-efficiency. They can remove very small particulates of 0.3 microns or larger.

MERV 9-12:
These are the Mid-range filters of relatively high quality and can capture very small particles of 1 micron or larger.

MERV 5-8:
They’re often made of pleated cloth or paper that provides good filtration and are used in residential settings.
Applications of Box Filters
Office Buildings:
Maintain clean indoor air for employees and visitors while improving HVAC performance.
Hospitals & Healthcare Facilities:
Support a healthier environment with consistent, high-level particle filtration.
Manufacturing Plants:
Protect equipment and workers by reducing airborne dust, debris, and contaminants.
Data Centers:
Ensure optimal airflow and equipment longevity by minimizing particulate buildup.
Educational Institutions:
Improve indoor air quality in classrooms, gyms, and common areas for a better learning environment.
Retail & Hospitality Spaces:
Enhance comfort for customers and staff with clean, filtered air throughout the building.
Our service
Pre-sales Service:
Needs Analysis:
Communicate to understand customer requirements and goals.
01
Product Consultation:
Provide product details for customers to choose suitable options.
02
Solution Design:
Create personalized solutions based on needs.
03
Cost Estimation:
Offer transparent cost estimates and quotations.
04
Sample Provision:
Provide samples for customer testing when needed.
05
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 & Logistics
Crush-Proof Packaging:
Triple-layer cardboard with corner protectors
Global Shipping:
Fumigation-free wooden crates for international sea transportation.
Custom Labeling:
Barcode/QR code tracking labels upon request.

FAQ
We're professional box filter manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized box filter from our factory.
Hvac Filter Box, Return Air Filter Box
