Brava Metro RA Series Tiebolt Classroom Knob Set – Adjustable 60/70 mm Backset
The Brava Metro RA Series Tiebolt Classroom Knob Set is a commercial grade cylindrical knobset featuring a concealed tiebolt fixing system and an adjustable 60/70 mm backset latch. Designed for classroom applications, the outside knob can be locked and unlocked by key, while the inside knob remains free at all times.
Key Features
- Classroom function – keyed exterior, free interior.
- Concealed tiebolt fixing for improved strength and security.
- Adjustable latch suits 60 mm or 70 mm backset.
- Commercial grade construction.
- Supplied with LW5 profile cylinder and two keys.
- Compatible with most restricted keying systems.
Fire Rated
- Successfully tested up to 4 hours on fire door assemblies in accordance with AS 1905.1-2005, subject to doorset configuration.
Specifications
- Function: Classroom
- Lock Type: Cylindrical – Tiebolt
- Lock Grade: Commercial
- Backset: Adjustable 60 mm / 70 mm
- Door Thickness: 35 mm to 45 mm
- Maximum Knob Projection: 69.5 mm
- Rose Diameter: 75 mm
- Latch Face Plate: 25 mm × 57 mm
- Strike: 70 mm × 28 mm × 2 mm
- Cylinder: LW5 profile (PD 8221)
- Door Handing: Non-handed
Brava Metro RA Series – Tiebolt Knob & Knob/Lever Sets – Item Code Family
Suitable Uses
- Classrooms and educational facilities.
- Commercial internal doors requiring controlled external access.
- Fire rated doors where classroom function is required.
Available Colour Variants
-
Polished Brass
RA3112PB -
Polished Stainless Steel
RA3012PSS -
Satin Stainless Steel
RA3012SS
Additional Information
- Tiebolt fixing provides increased resistance to door flex and misuse.
- Adjustable latch reduces installation errors on retrofit projects.
- Commonly specified in Australian education and commercial facilities.
