PURELINE50

Various design options with black, grey and white air control elements

Asymmetrical plenum box

Horizontal air discharge

Angled airflow

Vertical airflow

PURELINE50

The clean solution for significantly less ceiling contamination

Unobtrusive slot diffuser for large volume flow rates, blends in perfectly with suspended ceiling systems

■ Easy and quick installation
■ New areas of application – such as air curtains to protect fresh food counters
■ High flexibility thanks to numerous variants
■ Extended range of applications, now available with 1 to 4 slots
■ Very high comfort due to lower sound power levels and improved temperature and velocity reduction
■ More energy efficient due to lower pressure losses

Optional equipment and accessories
■ Attractive appearance due to extruded aluminium sections with anodised finish or powder coating
■ Diffuser face can be placed symmetrically or asymmetrically
■ Plenum box with lining
■ End plates, end angles, corner sections
■ Different looks due to choice of black, grey or white air control elements

Initialize order code

General information

Application

Slot diffusers are used as supply air or extract air devices in comfort zones
Suitable as mixed ventilation system for many applications due to the variety of variants and high flexibility
Unobtrusive integration into suspended ceilings
For room heights up to 4 m (lower edge of suspended ceiling)
Suitable for large volume flow rates. Wide range of applications due to optional 1- to 4-slot front rail
One-way or alternating air discharge can be adjusted on site to meet local requirements
High induction results in a rapid reduction of the temperature difference and airflow velocity (supply air variant)
For constant and variable volume flows
For supply air temperature differences of -10 to +10 K

Special characteristics

Uniform air pattern reduces contamination of the ceiling caused by the induction of room air
Horizontal, angled or vertical air discharge by means of manually adjustable air control elements
Comfortable indoor climate due to high induction and rapid reduction of temperature differences and airflow velocities
Attractive appearance due to extruded aluminium sections with anodised finish or powder coating (according to RAL CLASSIC colour scale)
The diffuser face has been optimised for maximum volume flow rate at low sound power levels
Suitable for continuous linear arrangement

Nominal sizes

LN: 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950 mm
Intermediate sizes of the diffuser face are also available (in increments of 1 mm)

Variants

PL50-... :

-*: 1 to 4 slot front rail
-PF: Combination of diffuser face and plenum box with fixed connection
-SF: Combination of diffuser face and plenum box with detachable screw fixing
-PB: Plenum box only (for combination with DS)
-DS: only front rail with B00 profile and screw fixing
-DF: only front rail with B00 profile and cross bar for fixing
-CD: Overflow rail which can be integrated into a slotted belt. The front rail has openings at the back through which air can flow. The fixing of the overflow rail must be done on site. The supplied connectors are used only for positioning and aligning the overflow rail
-BD: Blind rail that can be integrated into a slotted band. The diffuser face is closed on the reverse side so that there is no air flow through the blind rail. The blind rail must be fixed on site. The supplied connectors are used only for positioning and aligning the overflow rail
-CS: Corner section

Position of the plenum box on the diffuser face, if the plenum box is shorter than the diffuser face

Central position of plenum box
Plenum box on the left (LE)
Plenum box on the right (RI)

Plenum box variant

Symmetric position of plenum box, side entry spigot (HS)
Symmetric position of plenum box, top entry spigot (VS)
Asymmetric position of plenum box, side entry spigot (HA)

Construction

Surface diffuser face

Anodised, E6-C-0, natural colour
P1: Powder-coated RAL 9010, pure white, GU 50
P1: Powder-coated RAL 9006, white aluminium, GU30
P1: Powder-coated in any other RAL CLASSIC colour, GU 70

Attachments

D: Damper blade for volume flow rate balancing
LS: Lip seal
L: inner lining
EP: 2 end plates
EA: 2 end angles

Single diffusers are factory fitted with end plates or end angles. Either end plates or end angles can be used for the front end for continuous linear arrangements.

Accessories

EP: 2 end plates
EA: 2 end angles

For slot diffusers as continuous linear arrangement, the end plates or end angles must be ordered separately and installed on site. 2 alignment plates for connecting the front rails to each other are supplied separately with each slot diffuser without a factory-fitted end piece.

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180
4 suspension lugs on plenum box for mounting by the customer
Manually adjustable air control elements with grooves to lock the elements for a particular air pattern
Factory set for a particular air pattern, manually adjustable on site (by others)
Spigot with groove for lip seal (only for lip seal version)
Diffuser face sizes from 600 to 2000 mm, in increments of 1 mm
If the diffuser face is longer than the plenum box, the rear side of the protruding diffuser face ends are covered.
Plenum boxes are only available in nominal lengths
Extract air variant with air control elements
The optionally available neck extension in the standard dimensions 22, 47, 72, 97 and 121 mm can be used to compensate for structural conditions
Fixing material for the diffuser face is supplied separately with the variants -SF and -DS

Material and surfaces

Diffuser face made from extruded aluminium section
Air control blades made of ABS plastic, UL 94, V-0, flame retardant
Plenum box made of galvanised sheet steel
End plates and end angles made of aluminium
Lip seal made of Evoprene
Lining made of mineral wool and closed-cell vinyl foam
Diffuser face with anodised finish, E6-C-0, natural colour
P1: powder-coated colour according to RAL CLASSIC
Air control blades similar to RAL 9005, jet black
G: Air control elements similar to RAL 9006, grey
W: Air control blades similar to RAL 9010, white

Mineral wool

Mineral wool on surfaces in contact with air laminated with glass fibre fabric, abrasion-resistant up to 20 m/s
Acc. to EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No. 1272/2008
Inert to fungal and bacterial growth

Standards and guidelines

Sound power level of the air-regenerated noise measured according to EN ISO 5135.
Conforms to VDI 6022

Maintenance

Low maintenance, as there is no wear and tear due to design and materials used
Inspection and cleaning according to VDI 6022

Technical information

Schematic illustration of PL50-*-SF

1 Diffuser face with 1, 2, 3 or 4 slots
2 Adjustable air control element
3 Screw fixing
6 Neck
7 Plenum box
8 Suspension lug
9 Spigot

Optional
4 End plate
5 End angle
10 Lip seal
11 Damper blade for volume flow rate balancing

Slot diffusers direct the supply air from ventilation and air conditioning systems into the room, either horizontally, at an angle or vertically. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and indoor air. The result is a mixed ventilation system for comfort areas with good room air circulation and low turbulence in the occupied zone. Type PURELINE50 slot diffusers are factory fitted with manually adjustable air control elements. The airflow direction can be adjusted to meet various local requirements. Air discharge is one-way or alternating. Heating operation with vertical flow is also possible, as is angled air discharge. The supply air to room air temperature difference may range from -10 to +10 K. A damper blade (optional) enables volume flow rate balancing for commissioning. To give rooms an aesthetic, uniform look, Type PURELINE50 diffusers may also be used for extract air.

Nominal lengths	600 to 1950 mm (in increments of 150 mm)
Number of slots	1, 2, 3 or 4
Neck extension	22, 47, 72, 97, 121 mm
minimum volume flow rate at Δtz = -10 K	10 l/s or 36 m³/h
Maximum volume flow rate, at LWA ≅ 50 dB(A)	608 l/s or 2190 m³/h
Supply air to room air temperature difference	-10 to +10 K

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program.

Specification text

Slot diffusers of Type PURELINE50 with individually manually adjustable air control elements and 1, 2, 3 or 4 slots.

Air distribution can be alternating horizontal, alternating angled, vertical, one-way horizontal to the left or one-way horizontal to the right.

The slot diffusers are intended to be installed in suspended ceilings and are suitable for supply air and extract air. Ready-toinstall component which consists of a diffuser face with black, grey or white air control elements.

Variants with plenum box have 1 or 2 spigots. Symmetrically positioned plenum boxes may have side entry or top entry spigots. Asymmetrically positioned plenum boxes have only side entry spigots.

The plenum boxes are fitted with 4 suspension lugs.

The diffuser face fixing can be detachable or non-detachable. Spigots are suitable for circular ducts according to EN 1506 or EN 13180. The sound power level of air-regenerated noise is measured according to EN ISO 5135.

Special features

Uniform air pattern reduces contamination of the ceiling due to induced room air
Horizontal, angled or vertical air discharge by means of manually adjustable air control elements
Comfortable indoor climate due to high induction and rapid reduction of temperature differences and airflow velocities
Attractive appearance due to extruded aluminium sections with anodised finish or powder coating (RAL CLASSIC colour)
The diffuser face has been optimised for maximum volume flow rate at low sound power levels
Suitable for continuous linear arrangement

Materials and surfaces

Diffuser face made from extruded aluminium sections
Air control elements made of ABS plastic, UL 94, V-0, flame retardant
Plenum box made of galvanised sheet steel
End plates and end angles made of aluminium
Lip seal made of Evoprene
Lining is mineral wool with vinyl closed cell foam
Diffuser face with anodised finish, E6-C-0, natural colour
P1: Powder-coated, RAL CLASSIC colour
Air control elements similar to RAL 9005, black
G: Air control elements similar to RAL 9006, grey
W: Air control elements similar to RAL 9010, white

Mineral wool

Mineral wool faced with glass fibre fabric on the surfaces in contact with the air, abrasion-resistant up to 20 m/s
To EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Non-hazardous to health thanks to being highly biosoluble in accordance with the Ordinance on Hazardous Substances and Note Q of the European Directive (EC) No. 1272/2008
Inert to fungal and bacterial growth

Construction

Surface diffuser face

Anodised, E6-C-0, natural colour
P1: Powder-coated RAL 9010, pure white, GU 50
P1: Powder-coated RAL 9006, white aluminium, GU30
P1: Powder-coated in any other RAL CLASSIC colour, GU 70

Technical data

Nominal lengths: 600 to 1950 mm, in increments of 150 mm
Diffuser face: up to 4 slots
Minimum volume flow rate with Δtz = –10 K: 10 l/s or 36 m³/h
Maximum volume flow rate, at LWA ≅ 50 dB(A): 608 l/s or 2190 m³/h
Supply air to room air temperature difference: -10 to +10 K

Sizing data

qv [m³/h]
Δpt [Pa]
LWA [dB(A)]

PL50

–

1200 x 1050 x 123 x 30

–

B00

P1 - RAL 9016

1 Type
PL50 Slot diffuser PURELINE50

2 No. of slots
1, 2, 3, 4

3 System
S Supply air
E Extract air (with air control elements)

4 Connection
DF Diffuser face with cross bar (only together with B00)
DS Front rail with fixing screws (only together with B00)
CD Air transfer section
BD Non-active diffuser
PB Plenum box only
PF Diffuser face fixed to the plenum box, non-detachable
SF Diffuser face fixed to the plenum box, detachable (only together with B00)

5 Plenum box variant
HS Symmetrical, with horizontal spigot
VS Symmetrical, with vertical spigot
HA Asymmetrical, with horizontal spigot

6 Nominal size [mm]
Diffuser face length × plenum box length × spigot diameter × neck extension

Diffuser face length
600 – 1950

Plenum box length
600 – 1950 (in increments of 150 mm)

Spigot diameter ØD
123 (with 1 slot)
158 (with 1 or 2 slots)
198 (with 2 or 3 slots)
248 (with 3 or 4 slots)
313 (with 4 slots)

Neck extension
No entry: without neck extension
22, 47, 72, 97, 121

7 Number of spigots
1 (up to plenum box length 1500 mm)
2 (from plenum box length 1200 mm)

8 Damper blade for flow rate balancing
No entry: without damper blade
D with damper blade

9 Lip seal
No entry: without lip seal
LS With lip seal

10 Lining
No entry: without lining
L With lining

11 Position of plenum box
No entry: centre
LE left
Rl right

12 Air pattern
No entry: alternating horizontal
AS Alternating angled
HL Horizontal left
HR Horizontal right
V vertical

13 Extended border – diffuser face
No entry: without extended border
B00 with extended border

14 End pieces
No entry: without end pieces
EP End plate
EA End angle
To be ordered separately for continuous linear runs

15 Surface
No entry: anodised, E6-C-0 (no colour)
P1 powder-coated, specify RAL CLASSIC colour

Gloss level
RAL 9010 GU 50
RAL 9006 GU 30
All other RAL colours GU 70

16 Colour of air control blades
No entry: similar to RAL 9005 (jet black)
W Similar to RAL 9010 (pure white)
G Similar to RAL 9006 (white aluminium)

Order example: PL50-1-S-PF-HS/1200×1200×123/1

Type	PURELINE50
No. of slots	1
System	Supply air
Variant	Diffuser face fixed to the plenum box, non-detachable
Plenum box variant	symmetrical, with horizontal spigot
Nominal size [mm]	Diffuser face length 1200, plenum box length 1200, spigot diameter 123, without neck extension
Number of spigots	1
Damper screen for volume flow rate balancing	without damper blade
Lip seal	without lip seal
Lining	without lining
Position of plenum box	Centre
Airflow settings	Alternating horizontal
Extended border – diffuser face	Without extended border
End pieces	without end finishes
Surface	anodised, E6-C-0 (no colour)
Colour of air control blades	Similar to RAL 9005 (jet black)

Downloads

product information

Product data sheet PURELINE50

PURELINE50_PD_2026_01_06_DE_en Product data sheet 17 MB pdf

certificates

Declaration of hygiene conformity PURELINE50

PL50_HC_2022_07_20_DE_en Certificate 680 KB pdf
Environmental Product Declaration Pureline 50

Pureline50_EPD_2024_11_DE_en Environmental Product Declaration 1,1 MB pdf
Non-CE Manufacturer's statement PURELINE50

PL50_NotCE_2022_02_08_14_38_03_DE_en Certificate 1,3 MB pdf

operation manuals

Installation manual PURELINE50

PL50_IM_A00000079623_V4_2025_07_GB_en Installation manual 1,7 MB pdf

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PURELINE50

The clean solution for significantly less ceiling contamination

General information

Technical information

Downloads

product information

Product data sheet PURELINE50

certificates

Declaration of hygiene conformity PURELINE50

Environmental Product Declaration Pureline 50

Non-CE Manufacturer's statement PURELINE50

operation manuals

Installation manual PURELINE50

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