Installation box for concrete installation, suitable as a connection box, screw spacing 83.5 (3 9/32 inch.) and 100 mm, corresponds to AFI standard, for device installation American Standard 432, according to NEMA Publ. NO.OS 1, combinable, with protection class IP30, for concrete installation, up to 90°C, halogen-free, 111 x 71 x 61, suitable for all types of formwork and counter formwork, for nail and magnet fastening