AOV Roof Vents
VentecAOV OSTRO
140° opening single-leaf natural smoke ventilator up to 2.5m² GFA. For flat and pitched roofs. EN 12101-2 certified with 24V actuator. Vent Trade.
- up to 2.5m²
- Roof 140° opening
- 24v
- Poly, insulated or dome
Why Choose the Ventec KAS S6A
Smoke Ventilation
Certified to BS EN 12101-2 with Re 1000 smoke extraction reliability. Opens to 82° in under 60 seconds, delivering 1.0m² geometric free area for rapid smoke dispersal.
Built for Durability
B 300 resistance to 300°C. Wind load WL 3000 and snow load up to SL 1000. FSC-certified laminated pine with fungicide protection resists rot and decay.
Easy Installation
Standard size 1140mm x 1180mm available for next day despatch. Chain link actuator with 2 core + earth wiring for straightforward connection to compatible control panels.
82° Centre Pivot Opening
Opens to 82° for rapid smoke dispersal. Gas strut assisted chain link actuator ensures smooth, reliable operation in under 60 seconds.
Toughened Safety Glazing
4mm toughened safety glass outer pane with Low-E coating, argon gas filled cavity, and 3mm/3mm laminated internal safety glass with dual layer tear resistant film.
FSC-Certified Pine Frame
Kiln-dried laminated pine from FSC-certified forests with fungicide protection and a clean white painted internal finish.
Aluminium Cover Parts
External cover parts finished in lacquered aluminium RAL 7043 grey, providing durable weather protection and a contemporary exterior look.
Dual Purpose
Smoke ventilation and daily environmental ventilation from a single unit. Compatible with 400 Series, O Range, and 1000-G control panels.
Gas Strut Assisted
Gas strut assisted operation ensures smooth, reliable opening and reduces actuator load for consistent long-term performance.
| Dimensions (W × H mm) | GFA (m²) |
|---|---|
| 780 × 980 | N/A |
| 780 × 1180 | N/A |
| 780 × 1400 | N/A |
| 1140 × 1180 (Standard) | 1.0 |
| 1140 × 1400 | N/A |
| 1340 × 980 | N/A |
| 1340 × 1400 | N/A |
* Non-standard sizes available on request. GFA data for standard size only.
15° to 60° Roof Pitch
Suitable for roof pitches from 15° to 60°. Actuator is hidden from external view.
2-Core Wiring
Chain link actuator with 2 core + earth wiring for straightforward connection to compatible control panels.
Accessories
Retractive day switch for daily use ventilation. Weather sensor options available for automated environmental ventilation.
Product Code
White finish: RVDA-KAS-024V-0001. Standard size 1140mm(W) x 1180mm(H). Non-standard sizes available on request.
Key Features
Gas Strut Assisted
Gas strut assisted chain link actuator ensures smooth, reliable opening and reduces actuator load for consistent long-term performance.
FSC-Certified Timber
Kiln-dried laminated pine from FSC-certified forests with fungicide protection and a clean white painted internal finish.
In-Stock Standard Size
Standard 1140mm x 1180mm delivering 1.0m² geometric free area is available for next day despatch to keep projects on schedule.
Heavy Load Rated
Wind load WL 3000 and snow load up to SL 1000 with B 300 resistance to 300°C for dependable performance in all conditions.
Choose Your Configuration
Standard
1140mm x 1180mm
Standard in-stock size delivering 1.0m² geometric free area. White painted pine interior with RAL 7043 grey aluminium cover parts. Current draw 1.8 amps.
Alternative Sizes
Non-Standard Options
Available in 780x980, 780x1180, 780x1400, 1140x1400, 1340x980, 1340x1400. Non-standard sizes on request.
Accessories
Day Ventilation Options
Retractive day switch and weather sensor options available for daily use ventilation control.
Certifications & Compliance
BS EN 12101-2
Certified to BS EN 12101-2 for smoke and heat exhaust ventilation systems. Standard size independently tested and verified for operational reliability.
Re 1000 / Re 10000
Operational reliability rated Re 1000 for smoke extraction and Re 10000 for daily environmental ventilation duty cycles.
Regular Servicing Required
Smoke ventilation systems require regular testing and record-keeping by authorised, competent persons. Servicing by accredited and certified smoke vent engineers only.
Need Some Help?
We have a team of ventilation specialists on hand to help guide you towards selecting and customising your system.
Call us: 01202 725 485
Email us: info@vent-trade.co.uk
Technical Specifications
Performance
- Geometric Free Area: 1.0m² (standard)
- Certification: BS EN 12101-2
- Vent Opening Angle: 82°
- Opening Time: < 60 seconds
- Reliability (Smoke): Re 1000
- Reliability (Daily): Re 10000
- Snow Load: SL 1000 (max.)
- Wind Load: WL 3000
- Resistance Temp High: B 300 (300°C)
Electrical
- Power Input: 24Vdc
- Current Consumed: 1.8 amps
- Actuator Type: Chain link
- Assisted Operation: Gas strut
- Cable Cores: 2 Core + Earth
Physical
- Standard Size: 1140mm(W) x 1180mm(H)
- Pane Size: 988mm(W) x 1049mm(H)
- Visible Glass: 963mm(W) x 990mm(H)
- Effective Light Area: 0.953m²
- Roof Pitch: 15° to 60°
- Glazing (24mm total): 4mm toughened + Low-E + argon cavity + 3mm/3mm laminated
- Frame Material: Laminated pine from FSC-certified forests
- Internal Finish: White painted
- Cover Parts: Lacquered aluminium RAL 7043 grey
Downloads & Resources
Documents
Data SheetRelated Products
Smoke Control
VentecO Range 7 Smoke Control Panel
Certified smoke control panel for single stairwell to 60-zone networked systems. 24V 7A output with 72-hour battery backup. EN 12101-10 compliant.
- Golden Thread ready
- Zonal lockout
- 1 to 60 zones
- Built-in anti-trap protection
- Secure configuration
AOV Roof Vents
VentecAOV OSTRO Access
140° opening smoke ventilator with roof access capability up to 2.5m² GFA. Offset 24v actuator for safe maintenance access. BS EN 12101-2 certified 140° opening
- up to 2.5m²
- Roof 140° opening
- 24v
- Poly, insulated or dome