H13 Air Filter Box for Fresh Air Systems

Three-stage G4, activated carbon and H13 filtration in compact inline housings for fresh-air, ducted HVAC and odor-control projects.

Model Air Filter Box

Core Parameters

Compatible Duct DiametersΦ100 / Φ150 / Φ200 / Φ250 mm Air Volume Range120 – 2600 m³/h (depending on model) Filtration StagesPrimary G4 + Activated Carbon Composite Filter + H13 HEPA Filter Pressure Loss Rate15 – 20%

Key Features

Three-stage filtration system (primary + activated carbon + H13) effectively removes harmful substances and odors Fully sealed welded housing with nano anti-corrosion coating for durability Tool-free access port for easy maintenance and filter replacement G4 primary filter is washable and reusable; activated carbon filter can be regenerated in sunlight; H13 filter lasts up to 9 months

Applications

Technical Parameters

MIWIND H13 air filter boxes are compact inline housings for fresh-air systems, ducted HVAC and odor-control applications. The housing combines G4 pre-filtration, an activated carbon composite stage and H13 high-efficiency filtration so buyers can specify the filtration arrangement together with the fan and duct system.

Three-Stage Filtration for Fresh-Air Systems

G4 pre-filtration: helps capture larger particles before they reach the finer filter media.
Activated carbon composite filter: supports odor elimination and air treatment.
H13 high-efficiency filter: provides the fine-filtration stage for projects that require higher filtration performance.

Air Filter Box Model Selection

Model	Air Volume (m³/h)	Pressure Loss Rate	Size (mm)	Diameter (mm)	Primary Filter	Activated Carbon Composite Filter	High-Efficiency Filter
GLX-100	120-320	15-20%	300x200x200	100	G4 filtration grade	Odor elimination and sterilization	H13 filtration grade
GLX-150	220-550	15-20%	300x200x200	150	G4 filtration grade	Odor elimination and sterilization	H13 filtration grade
GLX-200	520-1500	15-20%	430x300x300	200	G4 filtration grade	Odor elimination and sterilization	H13 filtration grade
GLX-250	1200-2600	15-20%	430x300x300	250	G4 filtration grade	Odor elimination and sterilization	H13 filtration grade

How to Select the Correct Model

Start with the target air volume and duct diameter, then check the fan pressure available after the duct, grille and filter losses are included. The selected model should also leave enough service space for filter inspection and replacement. If the project has a strict clean-air target, confirm the required filter combination and replacement interval before ordering.

Typical Applications

These housings can be used for outdoor-air intake, inline duct filtration, offices, retail spaces, workshops and other fresh-air projects that need a defined filter stage before the fan or occupied zone. For broader equipment selection, compare the housing with the MIWIND fresh-air and duct fan systems.

Request a Project Recommendation

Send the target air volume, duct diameter, filtration grade, installation conditions and expected quantity through the MIWIND contact form. Our team can confirm the model range and the pressure-loss data needed for the ventilation calculation.