Ultra-thin (20 mm) modular panel filters class G4, supplied in full containers for overseas projects and designed for installation in equipment located in limited space. 

I. Project background for the supply of customized equipment: Limited space creates difficulties for installation, as well as maintenance and operation.

The foreign customer specializes in the export of compact ventilation units that are fully prefabricated. The internal chamber for placing the filter in these installations has an extremely shallow depth, designed to use filters of standard thickness - 46 or 96 mmPanel filter class G4 could not install; In addition, the individual filter panels were of insufficient dimensions and were not equipped with a connection mechanism for installation close to each other. This required each panel to be installed separately, a time- and labor-intensive process, and also increased the risk of misalignment and air leaks in tight spaces.
The customer formulated four main requirements for product modification:
1. Reduce the total thickness of the filter to 20 mm so that it fits into the narrow body of the installation without the need to make changes to the design of the equipment;
2. Apply the technology of one-sided lamination of the filter material with a mesh during the corrugation process to increase dust holding capacity and simultaneously strengthen the structure on the air outlet side;
3. Provide double-sided stiffening ribs to prevent deformation or destruction of the thin filter under the influence of constant air flow pressure;
4. Add a coupling mechanism to quickly connect two panels into a single unit for simultaneous installation and removal, simplifying maintenance procedures.
Based on the technical specifications of installation dimensions and air flow parameters borrowed from foreign models, our technicians have successfully developed and supplied an ultra-thin G4 class modular panel filter.

II. Key Benefits of the G4 Ultra-Fine Composite Panel Filter Custom Manufacturing Process

This exportCustom G4 Class Panel FilterComprehensive design optimization, developed specifically for compact installations and including a number of unique solutions adapted to operating conditions in foreign markets:
1. Ultra-thin profile (20 mm) for ventilation systems with limited installation space
The total thickness of the filter is only 20 mm (which is three times thinner than standard pre-filters), which allows it to be installed directly into narrow compartments of compact ventilation and air conditioning systems. This eliminates the need to cut or rework equipment enclosures, significantly reducing modification costs and reducing installation time, making this solution ideal for compact ventilation systems.
2. Single-sided mesh lamination combined with pleating and integrated support grid on air outlet side for double reinforcement
On the air inlet side, continuous lamination technology is used with a metal mesh with a diamond pattern; This securely holds the pleated filter media in place and prevents it from being damaged (punctured) by solid dust particles or debris. On the air outlet side, a built-in support grille is provided in combination with stiffening ribs running through the entire thickness of the filter, which ensures structural stability in an ultra-thin frame. This prevents the material from collapsing, swelling or deforming under the constant pressure of the fan, ensuring stable airflow.
3. Built-in coupling system to improve installation and dismantling efficiency
Built-in latches allow you to quickly align and connect two filter panels into a single unit. This eliminates the need to manipulate multiple individual panels in a confined installation space and allows a single technician to perform installation and disassembly, reducing maintenance downtime and labor costs at overseas sites. Built-in sealing strips at joints prevent air leakage through the joints.
4. Standard filtration class G4: thin profile with high dust holding capacity
Using a polyester fiber pleated material with a gradient density and uniform pleat spacing, the design provides maximum effective surface area within a 20mm profile. The filter consistently meets G4 pre-filter standards, effectively trapping fibers, sand particles and dust, thereby protecting downstream medium efficiency filters. The material has excellent air permeability, and the low-drag design reduces the load on small fans, reducing energy consumption during operation.