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BS EN121014-6 weeks

Ventec Ostro AOV Roof Vent Bespoke Sizes

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.

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Ventec Ostro AOV Roof Vent Bespoke SizesPOA
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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.

140° Opening Angle
Single-leaf design opens to 140° for maximum smoke and heat dispersal. Rapid opening in under 60 seconds for emergency smoke ventilation.
Flat and Pitched Roofs
Installs on flat and pitched roofs up to 15° with standard or bespoke sizing. Suitable for commercial, industrial and residential buildings.
Document L Compliant
Meets Approved Document L thermal performance requirements, ensuring energy efficiency compliance alongside smoke ventilation capability.
Galvanised Steel Base
Robust galvanised steel base construction with turn-down flange and drip cap for secure, weather-resistant roof integration.
Opal Polycarbonate Lid
Standard 10mm opal polycarbonate lid provides light diffusion and strength. Clear, 20mm and 25mm lid options available on request.
Dual Purpose
Delivers both emergency smoke extraction and daily environmental ventilation in a single unit, compatible with 400 Series, O Range and 1000-G controllers.
up to 2.5m²GFA
Roof 140° openingsingle-leaf
24vvoltage
Poly, insulated or domelid options

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

SpecificationDetail
CertificationBS EN 12101-2
Maximum structural opening1800mm (W) × 2500mm (L)
Opening Angle140°
Base MaterialGalvanised steel
Lid10mm opal polycarbonate (standard)
Voltage24v
Opening Time< 60 seconds
Temperature ResistanceB300 (−25°C to +300°C)
Roof Access OptionAvailable (specify at order)
Control Compatibility400 Series AOV panels
Suitable Roof PitchFlat to 15°
GFAup to 2.5m²
Single-LeafRoof 140° opening
Lid OptionsPoly, insulated or dome
Geometric Free Area1.06m²
ComplianceApproved Document L
Maximum Opening Angle140°
Snow LoadSL 250
Wind LoadWL 1500
Resistance Temp HighB 300 (300°C)
Operating Voltage24Vdc
Cable Cores2 Core + Earth
Structural Opening1100mm(W) x 1100mm(L)
Base Height200mm
Roof PitchFlat to 15°

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