Grilles, Louvres and Diffusers Scotland

Single deflection grilles direct airflow in one plane, with blades set horizontally or vertically to guide supply air across the occupied zone.

They are the standard choice for straightforward supply and extract applications and are available in extruded aluminium and steel across a range of standard sizes, suitable for ceiling and wall mounting.

Double deflection grilles give the engineer control over airflow direction in both planes, with front blades adjustable for horizontal spread and rear blades for the vertical throw.

This makes them suited to perimeter positions where supply air needs to be directed into the room rather than across the ceiling.

Eggcrate grilles have a fixed, grid-like blade pattern that produces an even face velocity across the grille face.

They are commonly used in return air and extract applications and are suitable for ceiling and wall mounting in environments where airflow restriction needs to be minimised.

Transfer grilles allow air to move passively between adjacent spaces without ductwork, and door grilles are designed for mounting directly into door panels to allow return air to circulate between rooms.

Both types are grilles for use in residential buildings and commercial applications where balanced airflow is needed without additional duct runs.

Weather louvre grilles combine the function of a grille with weather protection, making them the standard choice for external wall penetrations where the opening needs to allow airflow while preventing rain ingress.

They are available in extruded aluminium with a range of blade pitches to suit different exposure conditions.

Swirl diffusers are high-induction ceiling diffusers suited to variable air volume applications, where the supply air volume varies with load.

Fixed and adjustable swirl diffusers are both available.

Adjustable versions allow the blade angle to be set on site to match the actual air volume delivered, making them a practical choice for VAV systems.

Linear slot diffusers deliver air through a narrow slot profile, making them the preferred choice in architectural and high-specification commercial interiors where ceiling aesthetics matter.

They are available for supply, extract, or combined supply and extract in a single unit, in lengths to suit standard ceiling grid modules or custom dimensions.

Square ceiling diffusers are the standard four-way diffuser used across most commercial HVAC applications, available in one-way, two-way, three-way, and four-way discharge patterns to suit the space geometry.

Circular ceiling diffusers offer a lower-profile alternative with a radial discharge pattern, well suited to ceiling installations where a compact, discreet terminal is preferred.

Jet diffusers and nozzles are designed for long-throw applications in large-volume spaces such as airports, sports halls, and atria where supply air needs to reach the occupied zone from a significant distance.

Available in fixed and adjustable versions, including motorised types for variable throw control.

Displacement diffusers supply air at low velocity directly into the occupied zone, typically at floor or low wall level, allowing the air to rise naturally with heat from occupants and equipment.

Weather louvres are the standard external louvres used at air handling unit intakes, exhaust points, and ventilation openings across the building envelope.

They are designed to allow free airflow while preventing rain and debris ingress, and are available in extruded aluminium across a range of free area percentages and pressure drop ratings.

Screening louvres conceal plant and equipment from view while maintaining the free airflow the equipment needs to operate.

They are a common feature on commercial rooftops and plant enclosures in architectural applications where the external appearance of the building is an important consideration for the design team and the architect.

Sand trap louvres are designed for environments where incoming air carries particulate matter. They use a blade geometry that separates sand and debris from the airstream before it enters the ventilation system.

In Scotland, exposed west coast and North Sea-facing sites they are particularly useful. We also regularly supply them alongside quarries, agricultural, and industrial premises where airborne debris is a constant presence.

Plant enclosure louvres are designed for integration into the panels of mechanical plant enclosures, providing controlled ventilation of the internal space while maintaining an architectural finish.

We can also provide both ceiling and wall-mounted plant enclosures, suitable for both internal and external installations.

We work closely with designers and manufacturers to specify louvre panel systems that meet both the performance requirements and the architectural façade’s aesthetics.

Where bespoke solutions are required, we confirm lead times and finish options at specification stage. This prevents problems in the programme further down the line.

Where the standard product range does not meet the dimensional or aesthetic requirements of a project, our manufacturer partners design and manufacture bespoke architectural grilles to the exact specification required.

These are typically used in high-specification commercial interiors, listed buildings, and architectural projects where the grille face forms part of the interior design.

Acoustic louvres reduce noise transmission through external openings.

For exterior areas where noise levels need to be controlled or where planning conditions set maximum noise limits, they are an excellent choice.

The acoustic performance is rated across a range of frequencies, and our team advises on the correct specification for the level of noise reduction required.

Perforated face diffusers distribute supply air through a perforated face plate, producing a low-velocity, even discharge pattern across the full diffuser face.

They are commonly specified in healthcare, clean room, and laboratory environments where a gentle, uniform air movement is required across the occupied zone.

High induction diffusers draw in large volumes of room air and mix it with the supply air before it reaches the occupied zone, reducing the temperature differential and improving comfort.

Floor grilles are used in raised access floor systems for underfloor air distribution, and computer floor grilles are a specialist variant designed for the precision airflow requirements of data centres and server rooms.

Security grilles are designed for environments where unauthorised access through ventilation openings needs to be prevented.

Plenum boxes are available in top and side entry configurations to suit the full range of grilles and diffusers we supply.

They are the connection point between the duct and the air terminal device, distributing supply air evenly to the diffuser face, and are available in standard sizes alongside bespoke dimensions for non-standard duct layouts.

Powder coating and special finishes are available across the grille and louvre ranges for projects where the standard mill finish or white polyester coat does not meet the architectural or client requirements.

We work closely alongside our manufacture partners to deliver RAL colour matched and anodised finishes that suit our client’s requirements.