‘B’ Sliding Fire Door

IMO ‘B’ Sliding Fire Door Sign – FS0149

This ‘B’ sliding fire door sign identifies a sliding fire door within a ‘B’ class fire division. The pictogram shows the sliding mechanism with its guide track and door leaf frames, without a self-closing arrow, indicating the door is manually operated rather than automatically self-closing.

A sliding fire door in a ‘B’ class division must be kept closed to maintain the integrity of the fire boundary at all times when not in active use. Sliding fire doors are often fitted where a hinged door would obstruct a passageway or working area, allowing crew to seal off a section quickly by running the door along its track rather than swinging it through an arc.

Where this sliding fire door sign is used

Sliding fire doors of this type are commonly fitted at internal ‘B’ class partitions in accommodation spaces, galleys, and service corridors where floor space is limited and a hinged door’s swing radius would be impractical. The sliding fire door sign should be mounted directly on or immediately beside the door so crew immediately recognise the fire rating and required closed-door discipline.

Installing this sliding fire door sign is straightforward: clean the mounting surface, apply using the sign’s adhesive backing or fixings, and position it at eye level wherever practical. Crew training and drills should always cover the correct operation of every sliding fire door on board, including confirming the track and leaf are free of obstruction and the door slides fully closed.

Regulatory context

Fire door classifications follow SOLAS Chapter II-2, which sets out the fire integrity standards required of ‘A’ and ‘B’ class divisions and their associated doors. Surveyors checking every sliding fire door and its signage during inspections will typically confirm the door slides freely along its full track and closes completely, as part of a routine fire safety survey.

‘B’ class divisions carry a lower fire-resistance rating than ‘A’ class divisions under SOLAS Chapter II-2, so correct signage and diligent closed-door practice for every sliding fire door remain important regardless of the division class.

Technical specifications:
IMPA: 33.6040
ISSA: 47.560.40
SKU: FS0149
Compliant: IMO Resolution A.1116(30)

• Photoluminescent material for visibility in low-light and emergency conditions
• Durable construction suited to marine environments
• Complies with IMO/SOLAS signage requirements
• Easy to install using adhesive backing or fixings
• Long-lasting, resistant to fading and marine wear
• Standard size, custom sizes available on request

Manufactured to IMO photoluminescent standards, this sign is part of our full range of Fire Fighting Signs.

Need a different size? Contact us for a quote.

This sliding fire door sign clearly marks a fitted fire door position on board, helping crew and surveyors confirm the door is correctly identified during fire drills and class inspections. See our full range of fire fighting signs for compliant marking throughout the vessel.