Fully tested and certified to BS EN 12101-2 for smoke extraction. Reliability rated Re 1000 for smoke extraction duty with opening time under 60 seconds.

Anti Finger-Trapping

Motor is programmed with an anti finger-trapping safety function, preventing injury during louvre blade operation.

Smooth Operation

Louvre blades rotate on pivot bearings connected to a rack and pinion mechanism, ensuring smooth and synchronized blade movement up to 85° opening angle.

BS EN 12101-2 Certified

Fully tested and certified for smoke and heat exhaust ventilation systems to the UK national standard. Reliability rated Re 1000 for smoke extraction.

Dual Purpose

Delivers both daily environmental ventilation (Re 10000 rated) and emergency smoke control in a single unit.

Press-Formed Mitred Corners

Precision press-formed mitred corner joints create an enhanced, refined visual appearance suitable for architectural applications.

Next Day Despatch

Standard sizes available for rapid despatch from stock — keeping your project on schedule.

Thermally broken louvre systemtype

Up to 2.0m² GFAfree area

U-value 1.1 W/m²Kthermal

High airflow performance with large aerodynamic free areaairflow

Why specify the VELO

Smoke Ventilation. Fully tested and certified to BS EN 12101-2 for smoke extraction. Reliability rated Re 1000 for smoke extraction duty with opening time under 60 seconds.

Energy Efficiency. Overall U-value as low as 1.9 W/m² K with double-glazed blades. Thermally broken frames with argon-gas filled cavity and low-E glass for exceptional thermal performance.

Dual Purpose. Delivers both daily environmental ventilation (Re 10000 rated) and emergency smoke control in a single unit, reducing the number of facade openings required.

Configuration options

Standard Frame (1.04m² GFA). 4-blade louvre window. 1150mm(W) x 1250mm(H). 286mm blade height. Aerodynamic free area 0.68m². Weight 47 kg.

Large Frame (1.5m² GFA). 6-blade louvre window. 950mm(W) x 2100mm(H). 331mm blade height. Aerodynamic free area 0.94m². Weight 67 kg.

Custom Sizes (Bespoke). Min 350mm(W) x 350mm(H), max 2500mm(W) x 6000mm(H). Non-standard sizes available on request — may not be compliant with BS EN 12101.

Technical Specifications

Specification	Detail
Structural Opening	1035mm (W) x 2455mm (H)
Opening Time	< 60 seconds
Geometric Free Area	1.04m² / 1.5m²
Voltage	24
Thermal Performance	EN 10077
Reliability Class Type	Re 1000
Colour	RAL 8019
Certification	BS EN 12101-2
GFA (Geometric Free Area)	1.57m²
Glazing Options	Double or triple glazed louvres
Frame	Thermally broken and insulated aluminium
Thermal Standard	EN 10077 compliant
U-Value	Very low — achievable with triple glazing and insulated framework
Air Permeability	Class-leading low
Reliability Class	Re 1000
Control Compatibility	400 Series AOV panels
Installation	Vertical facade
Type	Thermally broken louvre system
Free Area	Up to 2.0m² GFA
Thermal	U-value 1.1 W/m²K
Airflow	High airflow performance with large aerodynamic free area
Aerodynamic Free Area	0.68m² / 0.94m²
Vent Opening Angle	0 – 85°
Reliability (Smoke)	Re 1000
Reliability (Daily)	Re 10000
Resistance Temp High	B 300 E
Operating Voltage	24Vdc
Current Consumed	Max 0.85 amps
Actuator	D+H LDF 100/70-RL
Actuator Mount	Internal top right of side-frame
Tractive Force	800N
Cable Cores	2 Core + Earth
Operating Temp	-5°C to 50°C
Standard Size (4-blade)	1150mm x 1250mm
Standard Size (6-blade)	950mm x 2100mm
Max Size	2500mm(W) x 6000mm(H)
Min Size	350mm(W) x 350mm(H)
Blade Height	200mm – 450mm
Glazing	6mm laminated + 20mm argon cavity + 6.38mm laminated low-E
U-value (Glazing)	1.1 W/m² K
U-value (Overall)	1.9 – 2.0 W/m² K
Finish	RAL 9010 matt (other RAL colours on request)

Ventec AOV VELO 1.5m2 GFA Thermal Louvre Window

Datasheets & Downloads

VELO

Why specify the VELO

Configuration options

Technical Specifications

Shipping & Returns

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