These come in to sizes "A" kit and "B" Kit wall mountable metal cases.

Occupational Health & Safety (First Aid) Regulation 1989.

WorkCover NSW

First Aid Kit " A" is required for use in places of employment where Factories and  construction sites at which 25 or more persons work;

Other places of work at which 100 or more persons work.

First Aid Kit "B" is required for use in places of employment where Factories and construction sites at which less than 25 persons work;

Other places of work at which less than 100 and more than 10 persons work.

Contents of kits