AluK SG52 and SL52 Curtain Walling System October 11, 2017 by DediCloud_1j967726 The AluK SG52 and SL52 systems have been used at Burntwood School in Wandsworth. The AluK SG52 Curtain Walling System is a flexible and high performance structurally bonded system to minimise external sitelines. AluK