Primary Polyester Air Filter Media Roll

Key Features:
•G2-G4 Primary Grade Filtration Efficiency (EN779 Standard)
•100% Virgin Synthetic Polyester Fiber (Glue-Free & Non-Toxic)
•Progressive Fiber Layering for Maximum Dust Holding Capacity
•Extends Service Life of Downstream Secondary & HEPA Filters
•Flame Retardant Compliance (DIN 53438 F1 / UL 900 Class 2)

Product Overview

Our Primary Polyester Air Filter Media Roll is specially engineered to serve as the first line of defense in air handling and ventilation systems. Manufactured from 100% virgin synthetic polyester (PET) fibers via an eco-friendly hot-air thermal bonding process, this primary filter media effectively traps airborne coarse particulates, lint, insect debris, and heavy industrial dust. Designed for commercial HVAC units, factory ventilation intake, and spray booth pre-filtration, it delivers reliable particle capture with minimal pressure drop, significantly reducing system energy consumption and protecting high-value downstream secondary and HEPA filters.

First-Stage Defense for Air Handling Systems

As a high-performance primary filtration medium, this roll is optimized to capture larger particulates ( $>5\,\mu\text{m}$ ) before air enters secondary bag filters or final rigid filters. By intercepting heavy atmospheric dust early in the airflow path, it prevents premature clogging of expensive fine filters and extends the overall operational lifespan of the entire filtration system.

Thermal Bonded 3D Gradient StructureFeaturing a progressive fiber density design, the synthetic matrix transitions smoothly from open, coarse fibers on the air-inlet side to dense, fine fibers on the air-outlet side. This three-dimensional structure allows particulates to be trapped across the full depth of the media, achieving superior dust holding capacity (DHC) while maintaining a low initial airflow resistance ( $20\text{--}35\,\text{Pa}$ ).

100% Binder-Free & Flame Retardant SafetyFree from chemical resins, solvents, and glues, our primary polyester rolls eliminate volatile organic compound (VOC) off-gassing and foul odors. Impregnated with high-grade flame-retardant synthetic fibers, the material complies with global fire safety standards including DIN 53438 Class F1 and UL 900 Class 2, ensuring self-extinguishing safety in high-temperature or continuous-duty ventilation.

High Thermal & Moisture StabilityBuilt for demanding industrial environments, the synthetic PET fiber construction does not absorb moisture, resisting mold growth, sagging, or structural failure in humid ambient air. It maintains mechanical integrity under continuous thermal workloads up to $100^\circ\text{C}$

Technical Specifications

Model	GLM-100	GLM-150	GLM-200	GLM-250	GLM-300	GLM-350	GLM-400
Gram/㎡	100	150	200	250	300	350	400
Thickness	5mm	8-10mm	12-15mm	18-20mm	22-25mm	28-30mm	35-40mm
Initial resistance	15Pa	20Pa	28Pa	38Pa	48Pa	58Pa	68Pa
Final resistance (Recommended)	200Pa	250Pa	250Pa	250Pa	250Pa	250Pa	250Pa
Rated Air Flow	2.0m/s	1.5m/s	1.5m/s	1.2m/s	1.0m/s	0.7m/s	0.5m/s
Rated Air Flow	7200 m³/h	5400 m³/h	5400 m³/h	4200 m³/h	3500 m³/h	2500 m³/h	1800m³/h
Thermal Stability	100℃	100℃	100℃	100℃	100℃	100℃	100℃
Average Arrestance	72%	80%	88%	90%	91%	92%	93%
Dust holding capacity	350g/m2	420 g/m2	500 g/m2	550 g/m2	600 g/m2	650 g/m2	700 g/m2
Grade	G2	G3	G4	G4	G4	G4	G4
Standard size	1x20m/ 2x20m or according to your request