- Acoustic insulation index : R
- Cekal acoustic classification
- Self-cleaning glass
- Scratch resistant glass
- How glass breaks
- Safety classification
- Vandalism resistant glass
- Break-in resistant glass
- BRS bullets resistant glass
- BRNS bullet resistant glass
- SG & SGNS bullet resistance
- Fire resistance
- Reaction to fire
- Thermal insulation classes
- Light Transmission
- Thermal transmittance
- Solar factor g
- Triple glazing
- Warm edge
All about glass > Classification acoustique Cekal
Cekal, the French glass certification association, has defined 6 AR ratings from AR1 to AR6, according to the minimum valueof the glazing unit sound reduction index: R
Cekal Acoustic Reinforced ratings: AR
| AR | AR1 | AR2 | AR3 | AR4 | AR5 | AR6 |
| R en dBa | 25 à 27 | 28 à 29 | 30 à 32 | 33 à 34 | 35 à 36 | 37 et plus |