... operate and maintain 1.pvc door, exterior door, safety door 2.competetive price and high quality pvc door, exterior door, safety door(1)1800*2140; 1750*2140 ... : 60mm (4) glazing: 6+12+6mm Low E glass with grids inside(5) Surface Finish: White/blue/brown/ ... 4) Glass: Different glass options are available ,such as frosted glass,tempered glassm,laminated glass ,tinted glass,coated glass and low-e glass,5,5 ...