Supply Air Grilles

Single or double deflection, up to 70% free area

Deflection: Single or double
Blades: Adjustable aerofoil
Free area: Up to 70% fully open
Sizes: 100 – 1,200 × 100 – 600 mm

ISO 9001 Quality management

Overview

Versatile air distribution. Supply air grilles use adjustable aerofoil blades behind a 32 mm border — in one plane for single deflection, or front and rear sets for double deflection — so the air can be aimed in one plane or in two. Fully open, they give up to 70% free area.

An opposed-blade damper can be fitted behind the blades to set the flow. The grilles fit directly into the duct, or on a subframe into builders' work, with screw fixing as standard and spring clips or concealed fixing on request.

Standard sizes run from 100 to 1,200 mm long and 100 to 600 mm high, and larger grilles are supplied in sections. In independent tests at Cairo University's Measurements and Calibration Labs, a 500 × 250 mm grille delivered 810 to 2,507 m³/h at 29 dB.

Configurations & options

Single deflection
Double deflection
With damper
Without damper
Vertical blades
Horizontal blades

Materials & finishes

Specially extruded aluminium
RAL 9010 electrostatic powder coat as standard; any RAL colour or anodized on request

Technical specifications

Construction

Blades: Adjustable aerofoil, horizontal and vertical
Border: 32 mm
Damper: Opposed blade, optional
Material: Specially extruded aluminium
Finish: RAL 9010 powder coat; other colours on request
Fixing: Screws; spring clip or concealed on request

Sizes

Length: 100 – 1,200 mm
Height: 100 – 600 mm
Larger: Supplied in sections

Performance

Free area: Up to 70% fully open
Throw data: With ceiling effect, to 0.5 m/s
Without ceiling: Throw × 0.7
Lab-tested sound: 29 dB, 500 × 250 mm at 810 – 2,507 m³/h

Certifications & standards

What each mark on this product means, who issues it and how it applies here.

All certifications & standards

ISO 9001

Quality Management Systems

Issued by International Organization for Standardization (ISO)

What it is

The international standard for quality management systems. A certified company works to documented processes, checks its output against them, records what it finds and corrects the cause of any fault, and is audited on all of it by an independent certification body.

On this product

Designed, fabricated and inspected under our certified ISO 9001 quality system: the same documented process for every unit, whichever of our factories builds it.

How do I size a supply grille?

From the air volume and the design velocity, find the effective area (Veff = Q ÷ (Aeff × 3,600)), choose the grille from the effective area table, then check the throw, pressure loss and noise.

Has the grille been independently tested?

Yes. Cairo University's Measurements and Calibration Labs measured a 500 × 250 mm grille from 810 to 2,507 m³/h and recorded 29 dB at every point (certificate MCL 0721801Z/B).

What if the grille is not near the ceiling?

Throw data is given with ceiling effect; without it, take about 0.7 of the tabulated throw.

Products that work alongside it, then the rest of Air Terminals & Distribution.

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