Aluminum Combination Filter Grilles for HVAC — Louvered, Perforated Face & Cubed Core Types

Airotek's Combination Filter Grilles (CG-PF and CG-SS-PF Series) are precision-engineered for HVAC return and exhaust applications where integrated filtration, low pressure drop, and clean aesthetics are essential. Available in aluminium, steel, and stainless steel with powder-coat finish.

CG–SS–PF CG–SS–PF–D CG–SS–PF–25–D CG–PF CG–PF–D CG–PF–25–D

25 mm & 50 mm filter depths

Hinged face for easy access

51% free area (CG-PF series)

Powder coat RAL 9016 standard

Aluminium, Steel & SS options

Integral damper version available

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Product Description

Complete Range of HVAC Combination Filter Grilles — Designed for Performance & Easy Maintenance

Every Airotek combination grille is engineered to meet the demands of commercial and industrial HVAC systems — combining effective air filtration with architectural appeal and long-term serviceability.

Airotek manufactures a comprehensive line of combination filter grilles incorporating three distinct face types — louvered, cubed core, and perforated face — to suit a variety of HVAC design requirements. All grilles are engineered to accept either 25 mm or 50 mm thick filters and feature a hinged face panel for rapid, tool-free filter access during routine maintenance.

The full range is available in extruded aluminium, mild steel, and stainless steel construction, making these grilles an ideal solution for both standard and corrosion-sensitive environments. Their versatile design makes them equally suited to supply, return, and exhaust air applications across offices, hospitals, hotels, clean rooms, and industrial facilities.

In addition to the combination filter grilles, Airotek offers a broad selection of functional and aesthetic grilles and registers engineered for standard to heavy-duty air distribution and filtration duty — ensuring consistent airflow performance throughout the HVAC system.

← Browse the full Grilles & Registers range

CG-PF Series — Perforated Face Filter Grille

The CG-PF Series perforated face filter grilles — constructed in aluminium or steel — are specifically designed for return and exhaust applications that require low pressure drop and low sound levels. Key design features include:

✔ Removable face for 25 mm or 50 mm filter cartridges
✔ Ideal for ceiling installation as return air to fan coil units in hotels, hospitals, and commercial buildings
✔ Removable core with integrated air filter frame — simplifies cleaning and provides direct access to fan coil units for maintenance
✔ 51% free area for efficient, unrestricted airflow

Features & Advantages

Engineering Advantages Built Into Every Combination Filter Grille

Designed for demanding HVAC environments, Airotek combination grilles deliver measurable performance benefits across installation, operation, and maintenance.

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Extruded Aluminium & Stainless Steel Face Options

Choose between extruded aluminium profiles or stainless steel perforated sheet front panels — matching structural requirements and corrosion resistance needs of your project environment.

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Removable Core Design for Easy Maintenance

The removable core assembly allows filter replacement and fan coil unit access without dismantling the entire grille frame — significantly reducing downtime during scheduled servicing.

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Integral Filter & Opposed Blade Damper Options

Combination grilles can be specified with an integral air filter holder and/or an opposed blade damper (OBD) for precise airflow control — eliminating the need for separate volume control components.

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Powder Coated Finish — Standard RAL 9016

All grilles carry an anti-static, 55-micron powder coat in standard RAL 9016 (traffic white). Custom RAL colours and anodised finishes are available on request to match interior specifications.

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Low Pressure Drop & Low Noise Performance

With 51% free area in the CG-PF series, airflow resistance is minimised — translating to lower fan energy consumption, quieter HVAC operation, and improved occupant comfort in noise-sensitive spaces.

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Custom Sizes & Specifications Available

Non-standard frame sizes, custom blade angles, and special finish requirements are accommodated through our in-house CNC fabrication facility. Share your drawings and we'll engineer an exact fit.

Material & Finish Specifications

Construction Details & Finish Standards

All Airotek combination grilles are manufactured to consistent dimensional and finish standards. Refer to the table below for standard construction parameters.

Specification Parameter	Standard Option	Optional / On Request
Frame Construction	High-quality extruded aluminium profiles	Mild steel / Stainless steel
Front Face Panel	SS Perforated Sheet (CG-SS-PF) / Aluminium Perforated	Louvered, Cubed Core
Core Type	Removable core with filter fixing frame	Fixed core
Filter Depth	25 mm or 50 mm standard thickness	Custom filter depths
Filter Access	Hinged face panel (tool-free)	—
Surface Finish	Anti-static powder coat, RAL 9016, 55 microns	Custom RAL colour, Anodised, Mill finish
Damper Option	No damper (standard)	Opposed Blade Damper (OBD), mill finish aluminium
Free Area (CG-PF)	51%	—
Applications	Return & Exhaust air	Supply (with damper)

* All specifications subject to final engineering review. Contact our team for non-standard requirements or project-specific tolerances. Learn about our manufacturing infrastructure →

Typical Applications

Where Are Combination Filter Grilles Used?

Airotek combination grilles are specified by HVAC engineers and contractors across a wide range of commercial, institutional, and industrial building types.

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