Electrically Motorized wall Hatch for Smoke Ventilation
Efficient Smoke Ventilation with a wall Solution

SEV is a CE-marked wall hatch according to EN 12101-2, designed for both smoke ventilation in the event of a fire and daily comfort ventilation. The hatch is specifically designed for installation in vertical walls and is well-suited for stairwells, technical rooms, and other buildings where efficient smoke extraction is required. Thanks to its motorized operation, it is also ideal for regular airing or climate control.

Technical Specifications

• Bottom-hinged construction

• Opening angle: 10°–90°

• Operated by 24VDC control unit and chain motor via BVT button

• Available in glazed or solid versions

• U-value ranging from 1.10 W/m²K down to 0.50 W/m²K

• Options: Any RAL colour and various glazing types

• Minimum opening size: 800 × 800 mm

How Does a Smoke Vent Hatch Work?

A smoke vent hatch is designed to quickly release smoke and heat during a fire. When the SEV hatch opens, it creates a vertical ventilation opening that allows smoke to rise and escape the building. This improves visibility in escape routes, facilitates emergency response, and can prevent the building’s load-bearing structures from overheating. The hatch can be activated:

• Automatically via fire alarm or smoke detector

• Manually using a push button or emergency opener

Types of Smoke Vent Hatches

• Roof-mounted hatches: Common in industrial buildings, warehouses, shopping centers, etc.

• Wall hatches: Often used in stairwells or vertical shafts

• Combination hatches: Can function as access hatch, smoke vent, and ventilation hatch

Advantages of SEV

• Safe and controlled smoke release

• Combines fire protection with comfort ventilation

• CE-marked and tested according to applicable standards

• Glazed options offer both function and natural light

• Easy control via electric motor and push buttons

Regulations and Installation

SEV complies with European standards according to EN 12101-2. In Sweden, the installation of smoke hatches is governed by Boverket’s Building Regulations (BBR). Installation must be carried out by a certified installer and maintained regularly. The hatch is often required to meet building permit or insurance conditions.