... window/door opening styles. Product Profile:1. Opening styles: fixed, casement, sliding, sliding-hung, bi-folding, Thermal barries, spring door,etc.2 ... : P45, P50, P80, Sliding: L60, L73, L80, L85, L90, L100 Thermal Barrier series: DPG50, DPG60, DPE56, DP55,50,60, DLE70 4. Glass ...