Roof Louvre Blade – Residential (RLB-R) louvre smoke vent and air supply units are used in natural smoke and heat exhaust ventilation systems. Mounted on roofs, louvre smoke vents exhaust smoke and heat from a building, allowing low-level escape routes to be kept clear of smoke. RLB-R are fully certified to BS EN 12101-2.
They are particularly suited to residential and institutional buildings and may also provide natural comfort ventilation.
They are available in a wide range of sizes, louvre options and types of upstands. With the addition of double glazing they can also bring natural daylight into the building.
They may be installed at any angle from 0 to 90°, but are generally installed horizontally and supplied with aerodynamic wind shields as standard. They consume minimal energy during the opening and closing cycle and have high resistance to weather and are therefore suited for use on exposed and high wind areas.
They provide good security, are impact resistant and do not create a fall hazard when open.
Typical U-Values (W/m2.K)
Aluminium Insulated Blades: 1.75
Double Glazed Blades: 1.28
Adaptor Base - Insulated: 1.38
Adaptor Base - Uninsulated: 5.80
Water tightness to EN 1873: Pass
Impact resistance to ACRM: Class B
Voltage: 24V DC
Opening Angle: 90°
Ambient Operating Temperature: -25°C / +70°C
Protection Degree: IP40
Downward Load: 250N
Upward Load: 1500N
Resistance to Heat: B 300
Low Ambient Temperature: -25°C
Impact Resistance: Class B
Fire Rating: AA
Water Tightness: Pass