ARTEOR ™ Support frames for ARTEOR™ BS type boxes (60.3mm centres) are supplied with screws:. RS 815-9636 for 2x2 module BS 2 gang boxes. RS 815-9630 for 3 module BS 2 gang boxes. RS 815-9649 for 1-2 module 1 gang BS boxes. . Support Frames for French and