‘A’ Class Fire Door Sign

‘A’ Class Fire Door Sign

An a class fire door sign identifies a standard hinged door built to the ‘A’ class fire rating, the baseline fire-resisting door type used across the majority of internal fire zone boundaries on a merchant vessel. FS0144 marks this standard door configuration, distinct from the sliding and self-closing variants used in more specific locations, and is one of the most commonly ordered items in the whole fire door signage range.

This sign is cross-referenced to IMPA 33.6032 and ISSA 47.560.32, and is supplied in two sizes, 150x150mm and 300x300mm, matching the range used across the rest of the ‘A’ class door series. Consistent use of an a class fire door sign at every rated door on a vessel is one of the simplest ways to keep a fire control plan accurate and easy to verify during survey.

Because standard ‘A’ class hinged doors appear throughout accommodation blocks, machinery spaces, and cargo control areas, this sign is typically ordered in larger quantities per vessel than the sliding or self-closing variants, and having a fixed IMPA and ISSA reference simplifies bulk reordering for a new-build or major refit.

Where Standard ‘A’ Class Doors Are Fitted

FS0144 is used on the great majority of internal fire zone boundary doors, including accommodation corridor doors, machinery space access doors that do not require a sliding or self-closing mechanism, and cargo control room entrances. It is the default choice wherever a hinged door meets the ‘A’ class fire rating requirement without the additional functional need for automatic closing or a sliding track, making it the workhorse of the fire door signage range on most vessels.

Material Specification

Manufactured as standard on photoluminescent (glow-in-the-dark) fire-retardant marine-grade material, this sign is selected for durability under the heat cycling, humidity, and general wear typical of internal passageways and machinery spaces while staying visible during a power failure. The printed graphic resists fading under interior fluorescent lighting over long service periods, and both sizes are available in Class C or Class D vinyl depending on the specification called for in your vessel’s fire safety plan.

Mounting and Compliance

FS0144 is supplied as a self-adhesive label for direct application to the door leaf, or as a rigid panel for the door frame or adjacent bulkhead. Accurate marking of every ‘A’ class fire door supports the documented fire safety management approach described in general workplace hazard controls from Safe Work Australia, and keeps the vessel’s fire control plan consistent with what surveyors find on walk-through. It is listed in the Fire Fighting Signs category alongside the sliding, self-closing, and division signage, so a full fire door schedule can be ordered as a single batch ahead of survey or delivery.

Bulk Ordering for Fleet Consistency

Because standard ‘A’ class hinged doors are the most numerous fire-rated door type on most vessels, FS0144 is frequently ordered in larger quantities per ship than the sliding or self-closing variants. Quoting against IMPA 33.6032 and ISSA 47.560.32 for a whole-vessel or whole-fleet order keeps every a class fire door sign identical across sister ships, which simplifies stock holding for a technical manager responsible for several vessels built to the same specification and reduces the chance of an odd sign turning up during survey that does not match the rest of the fleet. New-build yards fitting out several sister ships in sequence typically place one consolidated order for the a class fire door sign across all vessels in the series, timed to the fire door installation schedule for each hull.