7.1 Supply Air Linear Slot Diffuser ASLD 3 7.2 Return Linear Slot Diffusers ARLD 4 7.3. Slot Diffuser dimensions 5 7.3. Possible air deliveries 5 7.4 Curved Supply Linear Slot Diffusers ASLD (C) 6 7.5. Optional Mitered Corners 7 7.5. Flange models 7 7.6. Optional profiles 8 7.6. Fixing details 8. LINEAR DIFFUSERS AND GRILLES The METALAIRE line of Linear Diffusers and Grilles is designed to satisfy the most discerning architect's design concept without compromising engineering performance. Linear slot diffusers and grilles can be divided into three categories: Formations, Linear Slot Diffusers and Linear Bar Grilles. Ventech produce Linear Slot Diffusers from specially drawn aluminium profiles. They are suitable for ceiling and high side-wall applications. Thanks to the connection possibilities of the slot diffusers it is possible to create continuous diffusers in multiple metres and with different corner angles. Dayus Shallow Bar Linear Grilles. Shallow bar linear grilles. 1/2 inch ultra shallow depth. Available in 2, 3, 4, and 6 inch widths only. NOT suitable for floor use. MADE TO ORDER - Any size in 3 days!

Model LSDLSD

Polyaire Linear Slot Diffusers are an attractive alternative to the ceiling or high sidewall supply diffusers. Slot diffusers can be installed individually in set lengths or in a continuous line. They can also be installed in any type of ceiling application.

The modules are available with a 20mm or 25mm Slot with the number of slots ranging from 1 to 8 slots and are further available as fixed or removable core. (Fixed Core - Model LSD-FC, Removable Core – LSD-RC.
The air pattern control is adjustable from the diffuser face and is achieved by means of an adjustable pattern control with each slot, enabling a full 180º air pattern adjustment. The suggested volume control should be from the main duct run take-off, or from a butterfly damper fitted to the inlet of the cushion head box.
Construction is from extruded aluminium and the recommended maximum length for each section is 3 metres. Standard finish is powder coat white while other finishes are available to suit the interior and architectural design requirements.

Fixed Core Linear Model LSD
Sizes Available/Dimensions
20mm slot			25mm slot
No of slots	Neck size	Face size	Box size	Neck size	Face size	Box size
1	34mm	81mm	45mm	39mm	86mm	50mm
2	67mm	114mm	79mm	77mm	124mm	89mm
3	100mm	147mm	111mm	115mm	162mm	127mm
4	133mm	180mm	145mm	153mm	200mm	165mm
5	167mm	214mm	176mm	192mm	239mm	205mm
6	200mm	247mm	212mm	230mm	277mm	241mm
7	233mm	280mm	245mm	268mm	315mm	280mm
8	267mm	314mm	279mm	308mm	355mm	318mm

Removable Core Linear Model LSD-RC
Sizes Available/Dimensions
20mm slot			25mm slot
No of slots	Neck size	Face size	Box size	Neck size	Face size	Box size
1	45mm	85mm	55mm	50mm	90mm	60mm
2	78mm	118mm	89mm	88mm	128mm	99mm
3	111mm	151mm	123mm	126mm	166mm	137mm
4	144mm	184mm	150mm	164mm	204mm	175mm
5	178mm	218mm	189mm	203mm	243mm	214mm
6	211mm	251mm	222mm	241mm	281mm	252mm
7	244mm	284mm	255mm	279mm	319mm	290mm
8	278mm	318mm	289mm	319mm	359mm	329mm

Slot Type Diffusers
Type LSD - Selection Data

Two Way Blow
L/s per metre	2 slots wide	4 slots wide	6 slots wide	8 slots wide
31	Blow in m.	1.83	-	-	-
	Pressure drop (Pa)	2.5	-	-	-
	Suitable N/C level	less than 25	-	-	-
47	Blow in m.	2.74	-	-	-
	Pressure drop (Pa)	5	-	-	-
	Suitable N/C level	less than 25	-	-	-
62	Blow in m.	3.35	2.13	-	-
	Pressure drop (Pa)	10	2	-	-
	Suitable N/C level	25	less than 25	-	-
78	Blow in m.	3.96	2.74	-	-
	Pressure drop (Pa)	20	2.5	-	-
	Suitable N/C level	30	less than 25	-	-
93	Blow in m.	4.88	3.05	2.13	-
	Pressure drop (Pa)	2	5	2.5	-
	Suitable N/C level	32	less than 25	less than 25	-
108	Blow in m.	5.8	3.66	2.44	-
	Pressure drop (Pa)	32.4	7.5	2.5	-
	Suitable N/C level	35	less than 25	less than 25	-
124	Blow in m.	6.7	3.96	2.74	2.44
	Pressure drop (Pa)	40	10	5	2.5
	Suitable N/C level	38	less than 25	less than 25	less than 25
139	Blow in m.	-	4.57	3.05	2.44
	Pressure drop (Pa)	-	12.5	5	2.5
	Suitable N/C level	-	less than 25	less than 25	less than 25
155	Blow in m.	-	4.88	3.66	2.74

Slot Type DiffusersType LSD - Selection Data

Slot Type Diffusers
Type LSD - Selection Data

2 Slot Ac Grill