Here, Crystal Units was selected for the project because of its ability to manufacture high specification St Gobain glass – consisting of heat strengthened and laminated Planitherm Ultra N low e, combined with 8mm toughened and heat soaked Planiclear to precise tolerances. The company was also preferred for the project because of its capacity to meet incredibly strict delivery requirements in one of central London’s busiest districts, utilising our certified FORS silver fleet.