... ,BV etcSpecificationSquare20mm*20mm,25mm*25mm,30mm*30mm,40mm*40mm,50mm*50mm,60mm*60mm,80mm*80mm,100mm*100mm etcRectangular20mm*30mm,20mm*40mm,25mm*50mm,30mm*40mm,30mm ... *50mm,37mm*57mm,37mm*77mm,40mm*60mm,40mm*80mm ... ,50mm*100mm,etcWall thickness0.73mm-2.0mm as per customer's ...