July 19 (Reuters) - Ashtead Group Plc AHT.L
* Acquisition of CRS Contractors Rental Supply
* Has signed an agreement to acquire CRS Contractors Rental Supply (CRS) for an initial cash consideration of c$275m
* Additional earn out of up to c$20m dependant on future performance
* Acquisition, which is subject to certain regulatory approvals, is expected to complete in next few weeks