Six cylinders which when full hold enough air for 1 person for 37.5 hours.
This Breathing Air Trailer comprises of a two axle, two tonne, auto braked trailer.

Cylinder warning whistle set at 55 bar when there is 1 hours supply for 1 person in 1 cylinder.
Line pressure warning whistle set at 5 bar +/- 5%.

Two pressure regulators, two low pressure system gauges and one high pressure cylinder contents gauge are all housed in a waterproof steel box at front of trailer.

There is a low-pressure ex rated visual and audible alarm housed in its own steel box also at front of trailer.

Two stainless steel hose reels with breathing air hoses, two breathing air filter units and two Flite Bandolier BA sets in lockable aluminium box at the rear of the trailer.