The sliding /casement windows made up of one (or more) sashes .these have mesh leaf for mosquito protection . these have variety of features like safety glass ,desighner glass ,heat or sound proof ,high quality lock with lock/ knob system .these are customize and extremely versatile.these are available in variety of colors.multi chamber system increase heat and sound solution.these are durable and have attractive looks rather than aluminium or pvc . these also have option of matal or pvc or WPC sheet for bathroom purpose