Linear Bar Grille with Removable Core – 400 × 100

A clean, architectural linear bar grille with removable core, designed for wall-mounted supply air applications.

The quick-release removable core provides easy access behind the grille for installation, cleaning and maintenance, while the fixed 0° blades provide a straight-through air pattern.

Ordering & Sizing

Nominal Size: 400 × 100mm
Actual Neck Size: 390 × 90mm
Overall Face Size: 430 × 130mm

When ordering: Grille sizes are based on the nominal neck size. The actual neck is 10mm smaller than nominal to provide installation clearance.

Features

• Quick-release removable core
• Fixed 0° linear blades
• 12.5mm blade pitch
• 2.5mm thick blades
• Extruded aluminium construction
• White powder-coated finish
• Suitable for wall mounting
• Designed for supply air applications
• Concealed fixing arrangement
• Suitable for residential and commercial HVAC systems

Specifications

Specification	Details
Product Code	RCBG164
Nominal Neck Size	400 × 100mm
Actual Neck Size	390 × 90mm
Overall Face Size	430 × 130mm
Grille Depth	50mm
Flange Width	25mm
Construction	Extruded aluminium
Blade Thickness	2.5mm
Blade Pitch	12.5mm
Blade Deflection	0°
Finish	White powder coat
Removable Core	Yes
Dampenable at Grille Face	No
Application	Supply air
Mounting	Wall

Airflow Performance

For the 400 × 100 RCBG164, the manufacturer's published performance data is:

Face Velocity	Airflow	Throw	Pressure Drop	NC
1 m/s	28 L/s	1.3 m	1 Pa	<15
2 m/s	56 L/s	2.2 m	4 Pa	<15
3 m/s	84 L/s	3.2 m	9 Pa	<15
4 m/s	112 L/s	4.3 m	17 Pa	20

Airflow at 2 m/s: 56 L/s

For typical supply-air sizing, 56 L/s at 2 m/s provides a useful design reference. Actual system performance will depend on the ductwork, available pressure and installation.

Installation Note

The grille has fixed 0° blades and does not provide airflow adjustment at the grille face. Where airflow balancing is required, a suitable balancing damper should be installed within the duct system.