| AS20 | AS28 | AF18 | AF28 | |
|---|---|---|---|---|
| Refurb/Change of use | ||||
| Domestic upgrade | ||||
| Wall levelling capability | ||||
| Anti-flanking treatment | ||||
| Maximum acoustic performance required | ||||
| Fixing to one side only |
NOTE: The above table should be used as a guide only. A ceiling can be used as part of a system which may include an acoustic floor and/or wall system.