| Raning M | Combustibility | Flammability | Examples |
| M0 | Incombustible | Non-flammable | Bricks, ceramic … |
| M1 | Combustible | Non-flammable | PVC, mineral tile for false ceiling … |
| M2 | Combustible | Hardly flammable | Particle boards, wall carpet … |
| M3 | Combustible | Moderately flammable | Wood, rubber flooring … |
| M4 | Combustible | Highly flammable | Paper, polypropylene … |
| NC | Unclassified | Unclassified |
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