Ceiling Type Filter for HVAC | Airtes Industrial

ISO 16890 FINE FILTRATION

Ceiling Type Filter

Ceiling Type Filter is an air filter with a large surface area. Moreover, it is used in HVAC systems to capture fine particles, to provide second or final stage filtration and to protect HEPA filters against particle load.

The filter can be produced with glass fibre media, hot-melt separators and a two-component polyurethane sealing compound. In addition, aluminium or MDF frame options are available. Standard depths of 78 mm and 150 mm cover different mounting spaces. Therefore, various pressure drop requirements can be met.

ISO ePM1–ePM10
78 and 150 mm
Aluminium or MDF

Filter Standard

ISO 16890

Standard Depth

78–150 mm

Nominal Air Flow

750–3,000 m³/h

Maximum Temperature

80°C

What Is a Ceiling Type Filter?

A ceiling type filter is a fine filtration element. It is built by placing densely pleated glass fibre media inside a compact frame. Therefore, it suits ceiling filter housings, terminal filtration layouts and HVAC applications with limited mounting space.

The large filtration area helps to distribute the nominal air flow over the filter surface. As a result, the media is used more effectively. Furthermore, the filter can work as a second or final stage. It can also serve as a pre-filter upstream of a HEPA filter. You can review the full range on our air filter products page.

Models with 78 mm depth offer a more compact structure with a 50 mm pleat height. In contrast, 150 mm models have a 125 mm pleat height and a wider filtration area. Consequently, they can provide a lower initial pressure drop at the same nominal air flow.

Filter Selection and Application Process

Mounting Analysis

First, the filter housing, ceiling void, mounting size and air flow direction are checked.

Filter Class

Then, ISO ePM1, ISO ePM2.5 or ISO ePM10 is defined according to air quality targets.

Depth Selection

Next, a depth of 78 or 150 mm is chosen by mounting space and pressure drop.

Frame and Gasket

Afterwards, aluminium or MDF frame, gasket and face guard options are defined.

Pressure Monitoring

Finally, the clogging level is followed with differential pressure measurement.

Technical Specifications

Filter standard	ISO 16890	Filter classes	ISO ePM1, ISO ePM2.5 and ISO ePM10
Filter media	Glass fibre	Frame type	Aluminium or MDF
Standard depth	78 and 150 mm	Pleat height	50–125 mm
Maximum operating temperature	80°C	Face guard	Optional
Sealing compound	Two-component polyurethane	Separator	Hot melt
Gasket	Optional	Nominal air flow	750–3,000 m³/h
Recommended final pressure drop	According to the EN 13053 approach, initial ΔP + 100 Pa or initial ΔP × 3, whichever is lower

Standard note: The EN 779 standard has been withdrawn. Therefore, the M6, F7, F8 and F9 designations are shown only for historical classification and comparison with legacy projects. Current filter selection must follow the ISO 16890 classification.

Product Coding System

Product Type	Filter Class	Frame	Pleat Height	Dimensions	Face Guard	Gasket
AR Ceiling Type Filter	M6 F7 F8 F9	A: Aluminium M: MDF	1: 50 mm 2: 65 mm 3: 75 mm 4: 85 mm 5: 90 mm 6: 100 mm 7: 125 mm	Width × Height × Depth Example: 610 × 610 × 78 mm	FW: None FC: On clean side FD: On dirty side FB: On both sides	W: None P: Poured gasket PP: Double sided poured gasket E: EPDM EE: Double sided EPDM C: Grey EPDM CC: Double sided grey EPDM

Sample Product Code

AR-F8-A-1-610-610-78-FC-P

Ceiling type filter – historical F8 class – aluminium frame – 50 mm pleat – 610 × 610 × 78 mm – face guard on clean side – poured gasket

Ceiling Type Filter / 78 mm

Filter Model	EN 779 (withdrawn)	ISO 16890	Dimensions W × H × D (mm)	Filtration Area (m²)	Pleat Height (mm)	Nominal Air Flow (m³/h)	Initial Pressure Drop (Pa)
AR-M6-A-1-305-305-78-FC-P	M6	ePM10 70%	305 × 305 × 78	2.3	50	750	80
AR-M6-A-1-305-610-78-FC-P	M6	ePM10 70%	305 × 610 × 78	4.5	50	1,500	80
AR-M6-A-1-610-610-78-FC-P	M6	ePM10 70%	610 × 610 × 78	9	50	3,000	80
AR-F7-A-1-305-305-78-FC-P	F7	ePM1 55%	305 × 305 × 78	2.3	50	750	115
AR-F7-A-1-305-610-78-FC-P	F7	ePM1 55%	305 × 610 × 78	4.5	50	1,500	115
AR-F7-A-1-610-610-78-FC-P	F7	ePM1 55%	610 × 610 × 78	9	50	3,000	115
AR-F8-A-1-305-305-78-FC-P	F8	ePM1 70%	305 × 305 × 78	2.3	50	750	120
AR-F8-A-1-305-610-78-FC-P	F8	ePM1 70%	305 × 610 × 78	4.5	50	1,500	120
AR-F8-A-1-610-610-78-FC-P	F8	ePM1 70%	610 × 610 × 78	9	50	3,000	120
AR-F9-A-1-305-305-78-FC-P	F9	ePM1 80%	305 × 305 × 78	2.3	50	750	145
AR-F9-A-1-305-610-78-FC-P	F9	ePM1 80%	305 × 610 × 78	4.5	50	1,500	145
AR-F9-A-1-610-610-78-FC-P	F9	ePM1 80%	610 × 610 × 78	9	50	3,000	145

Ceiling Type Filter / 150 mm

Filter Model	EN 779 (withdrawn)	ISO 16890	Dimensions W × H × D (mm)	Filtration Area (m²)	Pleat Height (mm)	Nominal Air Flow (m³/h)	Initial Pressure Drop (Pa)
AR-M6-A-7-305-305-150-FC-P	M6	ePM10 70%	305 × 305 × 150	4.5	125	750	60
AR-M6-A-7-305-610-150-FC-P	M6	ePM10 70%	305 × 610 × 150	9	125	1,500	60
AR-M6-A-7-610-610-150-FC-P	M6	ePM10 70%	610 × 610 × 150	18	125	3,000	60
AR-F7-A-7-305-305-150-FC-P	F7	ePM1 55%	305 × 305 × 150	4.5	125	750	80
AR-F7-A-7-305-610-150-FC-P	F7	ePM1 55%	305 × 610 × 150	9	125	1,500	80
AR-F7-A-7-610-610-150-FC-P	F7	ePM1 55%	610 × 610 × 150	18	125	3,000	80
AR-F8-A-7-305-305-150-FC-P	F8	ePM1 70%	305 × 305 × 150	4.5	125	750	100
AR-F8-A-7-305-610-150-FC-P	F8	ePM1 70%	305 × 610 × 150	9	125	1,500	100
AR-F8-A-7-610-610-150-FC-P	F8	ePM1 70%	610 × 610 × 150	18	125	3,000	100
AR-F9-A-7-305-305-150-FC-P	F9	ePM1 80%	305 × 305 × 150	4.5	125	750	130
AR-F9-A-7-305-610-150-FC-P	F9	ePM1 80%	305 × 610 × 150	9	125	1,500	130
AR-F9-A-7-610-610-150-FC-P	F9	ePM1 80%	610 × 610 × 150	18	125	3,000	130

Production and tolerance note: Production in special dimensions can be evaluated on a project basis. Moreover, the pressure difference tolerance should be assessed by taking the greater value of “±10% + 5 Pa” or “10 Pa + 5 Pa”.

Comparison of 78 mm and 150 mm Filters

Comparison Criterion	78 mm Model	150 mm Model
Pleat height	50 mm	125 mm
Filtration area	2.3–9 m²	4.5–18 m²
Nominal air flow	750–3,000 m³/h	750–3,000 m³/h
Initial pressure drop	80–145 Pa	60–130 Pa
Main selection criterion	Limited mounting depth	Wider filter area and lower initial pressure

Structural Components

Glass Fibre Media

This media has a large surface area. Therefore, it captures fine particles effectively.

Aluminium Frame

A light and rigid carrier frame option suited to ceiling filter applications.

MDF Frame

An alternative frame structure. However, it is used only when the application and ambient conditions allow it.

Hot-Melt Separator

In addition, it protects the pleat spacing and organises the air passage channels.

Polyurethane Sealing

It closes the circumferential gaps between the filter media and the frame.

Gasket Options

Poured gasket, EPDM and grey EPDM options can be applied according to the mounting.

Application Areas

Capture of fine particles

Second stage filtration in HVAC systems

Final stage filtration in HVAC systems

Pre-filtration for HEPA filters

Ceiling filter housings

Terminal air filtration systems

Product Advantages

Large filtration area: It provides a wide filter surface within compact outer dimensions.

Light structure: Moreover, aluminium framed models simplify handling and mounting.

High dust holding capacity: Therefore, replacement intervals can be managed under suitable operating conditions.

Depth alternatives: The 78 and 150 mm options cover different mounting and pressure drop needs.

Gasket options: They can also adapt to different filter housings and clamping systems.

Special sizes: After a technical feasibility check, production to project dimensions can be evaluated.

Filter Selection Criteria

Real and nominal system air flow
Target ISO 16890 filter class
Width, height and depth of the filter housing
Permitted initial and final pressure drop
Face velocity through the filter

Aluminium or MDF frame requirement
Gasket and clamping system
Face guard side and air flow direction
Ambient temperature and relative humidity
Dust concentration and particle characteristics

Inspection and Maintenance

The initial and operating pressure drop should be followed with a differential pressure gauge or a transmitter. Moreover, the replacement time must not be based on operating hours alone. Pressure drop, real air flow, dust load, hygiene conditions and the physical state of the filter should be evaluated together.

Glass fibre media must not be cleaned with water or compressed air unless the technical documentation clearly states that it is washable. Otherwise, such treatment can damage the media, the pleat geometry and the circumferential sealing.

Frequently Asked Questions

What is the difference between 78 mm and 150 mm ceiling type filters?

The 150 mm models have a higher pleat and a larger filtration area. Therefore, the initial pressure drop can be lower than the 78 mm models at the same nominal air flow.

Is a ceiling type filter a HEPA filter?

No. This product is a fine particle filter under ISO 16890. However, it can be used as a pre-filter upstream of HEPA filters. It does not replace a HEPA filter.

How is the choice made between aluminium and MDF frames?

The choice depends on ambient humidity, mechanical strength, housing structure, hygiene requirements and project needs. In humid or controlled areas, the suitability of MDF must be evaluated separately.

Are the F7, F8 and F9 classes still current?

No, EN 779 has been withdrawn. These classes are shown only for historical comparison. Therefore, current technical selection must follow the ISO 16890 class.

Can ceiling type filters be produced in special sizes?

Yes, in principle. However, filtration area, pleat height, frame strength, air flow and production limits must be checked first. Special sizes are then evaluated on a project basis.

Technical Application Note

The nominal air flow, filtration area and initial pressure drop values given in the tables are reference product data. However, real filter performance can change depending on process conditions. Mounting method, test area, real air flow, filter face velocity, system pressure, environmental leakage, housing tightness, calibration of measuring devices, dust load, particle size, humidity, temperature and service life all have an effect. Therefore, the final selection must be based on the whole system rather than the product table alone.

Selecting the Right Ceiling Type Filter for Your Project

You can contact Airtes for technical product selection. Please share the air flow, ISO 16890 class, filter size, frame type, pleat height, face guard and gasket requirements of your project. Our technical team will then propose a suitable option.

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Ceiling Type Filter