Used for the wheelhouse,bridge and the closing place that provide observations&manipulate of various ships&structure at sea

 1)type: BH--electrical heating glass bolted fixed window
 BN--marine tempered glass bolted fixed window
 WH--electrical heating glass welded fixed window
 WN--marine tempered glass welded fixed window
 2)nominal size: 800x630, 800x710, 900x630, 900x710, 900x800, 1200x630, 1200x710, 1200x800, 1500x710, 1500x800, 1800x710, 1800x800, 1800x900mm