wall entry system ISO9001-2008 small volume,lightweigth,high strength,reasonable structure,easy installation, efficient sealin ModelTypeOuter sizeHole sizeC-E-1012 hole400×200 mm240×120 mmC-E-1024 hole400×400 mm240×240 mmC-E-1036 hole390×540 mm240×380 mmC-E-1049 hole500×500 mm380×380 mmC-E-10512 hole540×640 mm380×510 mmRohs compliant product,ISO9001 certified products.Our wall entry systems are ...