
Ventec OSTRO 1.5m2 GFA Stairwell AOV Kit
The Ventec AOV OSTRO 1.5m² GFA Natural Smoke Ventilator is a roof-mounted automatic opening vent designed for effective smoke and heat extraction, suitable for commercial and residential buildings.

Ventec OSTRO 1.5m2 GFA Stairwell AOV Kit
Kit Contents
1x Ventec OSTRO 1.5m2 Roof Vent
Can be used on both flat and sloping roofs up to 15° in various types of facilities such as: production and storage halls, logistic centres, public buildings, retail and service buildings and residential buildings. The Ventec Ostro is EN12101-2 certified and Approved Document L compliant.
1x Ventec W400 Battery Backup
The control unit is supplied with two 12v 4.5 Ah in-series batteries, that are kept charged when the mains power supply is available. When power is unavailable they guarantee a 72-hour period in standby mode allowing the execution of a complete emergency opening command as prescribed by EN 12101-10.
2x Ventec FS 400 Fire Override Switches
Manual override control for smoke ventilation systems, allowing fire fighters to directly open and close smoke vents and louvres as required.
1x Ventec SD 400 Optical Smoke Detector
Detector incorporates a pulsing LED located within the housing of the detector. The external detector moulding has an indicator LED which is clear in quiescent state but produces a red light in alarm.
Ventec AOV OSTRO
Certified to BS EN 12101-2 for natural smoke and heat exhaust ventilation. 140° opening angle delivers 1.06m² geometric free area for stairwell and corridor applications.
Why specify the Ventec AOV OSTRO
Smoke Ventilation. Certified to BS EN 12101-2 for natural smoke and heat exhaust ventilation. 140° opening angle delivers 1.06m² geometric free area for stairwell and corridor applications.
Document L Compliant. Meets Approved Document L thermal performance requirements as standard, ensuring compliance with energy efficiency regulations without additional components.
Versatile Application. Suitable for flat and pitched roofs across production halls, logistics centres, public buildings, commercial properties and residential developments.
Configuration options
1.06m² GFA (Standard). Standard in-stock size with 1100mm x 1100mm structural opening. Opal 10mm polycarbonate lid. Galvanised steel base with 200mm upstand height.
Custom Sizes (Bespoke). Non-standard sizes available on request. Alternative lid options include clear polycarbonate, dome options and sandwich panel configurations.
Technical Specifications
Technical Specifications
| Specification | Detail |
|---|---|
| Structural Opening | 1100mm(W) x 1100mm(L) |
| Opening | 140° |
| Geometric Free Area | 1.06m² |
| Voltage | 24v |
| Lid Finish | Opal Polycarbonate |
| Base Height | 200mm |
| Roof Access | No |
| Document L compliant | Yes |
| GFA | up to 2.5m² |
| Opening angle | 140° |
| Battery standby | 72 hours |
| Roof Pitch | Flat to 15° |
| Single-Leaf | Roof 140° opening |
| Lid Options | Poly, insulated or dome |
| Certification | BS EN 12101-2 |
| Compliance | Approved Document L |
| Maximum Opening Angle | 140° |
| Opening Time | < 60 seconds |
| Snow Load | SL 250 |
| Wind Load | WL 1500 |
| Resistance Temp High | B 300 (300°C) |
| Operating Voltage | 24Vdc |
| Cable Cores | 2 Core + Earth |
| Base Material | Galvanised steel |
| Lid | 10mm opal polycarbonate (standard) |
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