A slim yet solid and durable high quality sliding windows system from Aluk which guarantees strength & durability in use. Tested for 25000 cycles of operation (equivalent to more than 15 years of regular use) provides  an envying 80 to 120 Kg of sash weight with single glazed system choice of 4-8 mm for mass housing requirement. SC40 gives comprehensive performance along with reinforced security and wider vision with great overall aesthetics.