... toughened glasses 3.good sound proof and water proof folding doorWe have more than10 years experiences at aluminum ... and encironmental.*Multi-functions for opening:free folding,tri-sash folding,four-sash folding etc. which are convenient to slide.*Profiles ... & turn, sliding, casement, inward open, outward open, foldingColour : silver, black, golden, champagne, mirror or matte, as your sampleLong : 6 ...