An FB1 fire brigade padlock used to secure UK dry riser inlet and outlet cabinets. Keyed to the standard FB1 profile recognised by fire and rescue services, so crews can open it with their own keys during an incident without breaking the cabinet.Key specs FB1 keyway Brass body and shackle Weather-resistant Supplied with a key Suitable for standard dry riser arch and door assemblies When to replaceFit one whenever a cabinet lock is missing, seized or corroded — or where a previous lock has been cut off and not replaced. Landing valve and inlet security is part of BS9990:2015 and a common snag on annual inspections.UK stock & deliveryUK stocked with fast dispatch. Buy singly or in bulk for whole-building refurbishments and pair with matching straps and slam locks.