H13–H14 • KNIFE EDGE PROFILE
Ceiling Type HEPA Filter (Knife Edge Profile)
The ceiling type HEPA filter is a terminal filtration solution with a knife edge profile, developed to provide final-stage particle filtration in cleanroom ceiling systems, laminar flow units and fan filter units.
The construction consists of high-quality glass fibre filter media, an aluminium frame, hot-melt pleat separators and a two-component polyurethane sealing compound. It is available in H13 and H14 filter classes with different dimensions and pleat heights.
H13–H14
HEPA Filter Classes
89 / 109 mm
Standard Filter Depths
50 / 75 mm
Pleat Height Options
80°C
Maximum Operating Temperature
What Is a Ceiling Type HEPA Filter with Knife Edge Profile?
Ceiling type HEPA filters with a knife edge profile are compact final-stage filters used inside terminal filter housings or cleanroom ceiling modules. The special profile geometry of the filter frame supports correct centring and controlled sealing within a compatible terminal system.
The glass fibre filter media is arranged in a mini-pleat configuration, increasing the filtration surface area while supporting uniform air velocity distribution. Pleat height options of 50 mm and 75 mm provide different filtration areas and initial pressure-drop alternatives at the same nominal airflow.
Actual filter performance may vary depending on airflow, face velocity, terminal housing construction, profile compatibility, mounting pressure, sealing components, test method, measuring instrument, calibration status, filter loading, humidity, temperature and process conditions.
Selection, Installation and Verification Process
1
Determination of Project Data
Cleanroom class, filter class, nominal airflow and terminal housing dimensions are determined.
2
Profile and Dimension Check
The knife edge profile, external filter dimensions, depth and terminal connection are checked.
3
Controlled Installation
The filter is installed in the terminal system without damaging the media or protective screens.
4
Testing and Validation
After installation, aerosol leak testing, airflow, velocity distribution and differential pressure checks are performed.
Technical Specifications
| Filter standard | EN 1822 and ISO 29463 | Maximum operating temperature | 80°C |
|---|---|---|---|
| Filter classes | H13 and H14 | Face protection | Paint-coated aluminium sheet |
| Filter media | High-quality glass fibre | Gasket | Poured gasket |
| Frame type | Aluminium | Sealant | Two-component polyurethane |
| Recommended final pressure drop | 2 times the initial pressure drop, maximum 600 Pa | Separator | Hot melt |
Product Coding System
| Filter Type | Filter Class | Frame | Design | Pleat Height | Dimensions | Face Protection | Gasket |
|---|---|---|---|---|---|---|---|
| AR: Ceiling Type HEPA Filter Knife Edge Profile |
H13 H14 |
A: Aluminium | SM: Separated pleat design | 1: 50 mm 3: 75 mm |
W × H × D Example: 610 × 610 × 89 mm |
FB: Both sides | P: Poured gasket |
89 mm example product code:
AR-H14-A-SM-1-610-610-89-FB-P
AR-H14-A-SM-1-610-610-89-FB-P
109 mm example product code:
AR-H14-A-SM-3-610-610-109-P
AR-H14-A-SM-3-610-610-109-P
Ceiling Type HEPA Filter Models – Knife Edge Profile / 89 mm
Standard H13 and H14 model options with 89 mm depth and 50 mm pleat height.
| Filter Model | EN 1822 | ISO 29463 | Dimensions W × H × D (mm) |
Filtration Area (m²) |
Pleat Height (mm) |
Nominal Airflow (m³/h) |
Initial Pressure Drop (Pa) |
|---|---|---|---|---|---|---|---|
| AR-H13-A-SM-1-305-305-89-FB-P | H13 | ISO 35 H | 305 × 305 × 89 | 2.3 | 50 | 150 | 100 |
| AR-H13-A-SM-1-305-610-89-FB-P | H13 | ISO 35 H | 305 × 610 × 89 | 4.5 | 50 | 300 | 100 |
| AR-H13-A-SM-1-457-457-89-FB-P | H13 | ISO 35 H | 457 × 457 × 89 | 5 | 50 | 340 | 100 |
| AR-H13-A-SM-1-610-610-89-FB-P | H13 | ISO 35 H | 610 × 610 × 89 | 9 | 50 | 600 | 100 |
| AR-H13-A-SM-1-610-915-89-FB-P | H13 | ISO 35 H | 610 × 915 × 89 | 13.5 | 50 | 900 | 100 |
| AR-H13-A-SM-1-610-1220-89-FB-P | H13 | ISO 35 H | 610 × 1220 × 89 | 18 | 50 | 1200 | 100 |
| AR-H14-A-SM-1-305-305-89-FB-P | H14 | ISO 45 H | 305 × 305 × 89 | 2.4 | 50 | 150 | 125 |
| AR-H14-A-SM-1-305-610-89-FB-P | H14 | ISO 45 H | 305 × 610 × 89 | 4.7 | 50 | 300 | 125 |
| AR-H14-A-SM-1-457-457-89-FB-P | H14 | ISO 45 H | 457 × 457 × 89 | 5.3 | 50 | 340 | 125 |
| AR-H14-A-SM-1-610-610-89-FB-P | H14 | ISO 45 H | 610 × 610 × 89 | 9.4 | 50 | 600 | 125 |
| AR-H14-A-SM-1-610-915-89-FB-P | H14 | ISO 45 H | 610 × 915 × 89 | 14 | 50 | 900 | 125 |
| AR-H14-A-SM-1-610-1220-89-FB-P | H14 | ISO 45 H | 610 × 1220 × 89 | 18.8 | 50 | 1200 | 125 |
Ceiling Type HEPA Filter Models – Knife Edge Profile / 109 mm
Standard H13 and H14 model options with 109 mm depth and 75 mm pleat height.
| Filter Model | EN 1822 | ISO 29463 | Dimensions W × H × D (mm) |
Filtration Area (m²) |
Pleat Height (mm) |
Nominal Airflow (m³/h) |
Initial Pressure Drop (Pa) |
|---|---|---|---|---|---|---|---|
| AR-H13-A-SM-3-305-305-109-P | H13 | ISO 35 H | 305 × 305 × 109 | 3.4 | 75 | 150 | 75 |
| AR-H13-A-SM-3-305-610-109-P | H13 | ISO 35 H | 305 × 610 × 109 | 6.8 | 75 | 300 | 75 |
| AR-H13-A-SM-3-457-457-109-P | H13 | ISO 35 H | 457 × 457 × 109 | 7.6 | 75 | 340 | 75 |
| AR-H13-A-SM-3-610-610-109-P | H13 | ISO 35 H | 610 × 610 × 109 | 13.5 | 75 | 600 | 75 |
| AR-H13-A-SM-3-610-915-109-P | H13 | ISO 35 H | 610 × 915 × 109 | 20.3 | 75 | 900 | 75 |
| AR-H13-A-SM-3-610-1220-109-P | H13 | ISO 35 H | 610 × 1220 × 109 | 27 | 75 | 1200 | 75 |
| AR-H14-A-SM-3-305-305-109-P | H14 | ISO 45 H | 305 × 305 × 109 | 3.5 | 75 | 150 | 90 |
| AR-H14-A-SM-3-305-610-109-P | H14 | ISO 45 H | 305 × 610 × 109 | 7.1 | 75 | 300 | 90 |
| AR-H14-A-SM-3-457-457-109-P | H14 | ISO 45 H | 457 × 457 × 109 | 7.9 | 75 | 340 | 90 |
| AR-H14-A-SM-3-610-610-109-P | H14 | ISO 45 H | 610 × 610 × 109 | 14.1 | 75 | 600 | 90 |
| AR-H14-A-SM-3-610-915-109-P | H14 | ISO 45 H | 610 × 915 × 109 | 21.2 | 75 | 900 | 90 |
| AR-H14-A-SM-3-610-1220-109-P | H14 | ISO 45 H | 610 × 1220 × 109 | 28.2 | 75 | 1200 | 90 |
Custom Size Production
Custom dimensions can be evaluated according to terminal housing, fan filter unit and project requirements.
Custom dimensions can be evaluated according to terminal housing, fan filter unit and project requirements.
Differential Pressure Tolerance
Initial differential pressure values may have a tolerance of ±10% depending on production and test conditions.
Initial differential pressure values may have a tolerance of ±10% depending on production and test conditions.
Coding Structure Note
The face protection segment is not shown separately in the product codes of the 109 mm models. The final face protection configuration should be confirmed at the order stage.
The face protection segment is not shown separately in the product codes of the 109 mm models. The final face protection configuration should be confirmed at the order stage.
Structural Components
Glass Fibre Filter Media
Fine-fibre filter media used for high-efficiency H13 and H14 particle filtration.
Knife Edge Profile
Profile construction supporting correct positioning and peripheral sealing within the terminal housing.
Aluminium Frame
Provides low weight, mechanical strength and a surface suitable for cleanroom applications.
Poured Gasket
Supports controlled seating and sealing performance between the filter and connection surface.
Polyurethane Sealing
A two-component sealing compound that limits the risk of peripheral leakage between the filter pack and frame.
Hot-Melt Separator
Helps maintain controlled pleat spacing and balance airflow distribution across the filter surface.
Applications
Cleanroom ceiling systems
Laminar flow units
Fan filter units
Pharmaceutical production facilities
Hospitals and operating theatres
Microelectronics production
Food production areas
Biotechnology laboratories
Product Advantages
- H13 and H14 filter class options
- 89 mm and 109 mm depth alternatives
- 50 mm and 75 mm pleat height options
- Mini-pleat structure with high filtration area
- Compact design for fan filter units and terminal housings
- Filter options available with individual test certificates
- Pleat geometry supporting optimum air velocity distribution
- Custom size production capability
- Aluminium frame and face protection sheets
- Construction suitable for leak-tightness verification with correct installation and testing
Filter Selection Criteria
- Cleanroom class and permissible particle level of the process
- H13 or H14 filter class requirement
- Actual airflow per filter
- 89 mm or 109 mm filter depth
- 50 mm or 75 mm pleat height
- Knife edge profile compatibility of the terminal housing
- External filter dimensions and installation tolerances
- Initial pressure drop and available fan static pressure
- Face protection sheet requirement
- Pre-filtration level, dust load, humidity, temperature and process conditions
Inspection, Maintenance and Replacement
Differential Pressure Monitoring
The initial and operating differential pressure values of the filter should be monitored regularly.
The initial and operating differential pressure values of the filter should be monitored regularly.
Visual Inspection
The protection sheet, frame, filter media and gasket surface should be checked for damage or deformation.
The protection sheet, frame, filter media and gasket surface should be checked for damage or deformation.
Filter Replacement
The filter should be replaced when the final pressure drop is reached, when test results are unacceptable or when physical damage is detected.
The filter should be replaced when the final pressure drop is reached, when test results are unacceptable or when physical damage is detected.
Revalidation
After filter replacement, aerosol leak testing, airflow measurement and required cleanroom measurements should be repeated.
After filter replacement, aerosol leak testing, airflow measurement and required cleanroom measurements should be repeated.
Technical application note
The nominal airflow rates and initial pressure drops stated in the tables are product values under standard test conditions. Actual operating performance may vary depending on air density, face velocity, terminal housing geometry, knife edge profile compatibility, mounting pressure, sealing components, aerosol type, test area, measuring instrument, calibration status, filter loading, humidity, temperature and process conditions. Final selection should be made according to project calculations and validation requirements.
The nominal airflow rates and initial pressure drops stated in the tables are product values under standard test conditions. Actual operating performance may vary depending on air density, face velocity, terminal housing geometry, knife edge profile compatibility, mounting pressure, sealing components, aerosol type, test area, measuring instrument, calibration status, filter loading, humidity, temperature and process conditions. Final selection should be made according to project calculations and validation requirements.
HEPA Filter Selection with Knife Edge Profile
Contact Airtes for the selection of a ceiling type HEPA filter suitable for your cleanroom class, airflow, terminal housing dimensions and pressure-drop criteria.
