LWL connection splice box for the safe storage of fusion splices in the cable duct, intermediate floor, etc. suitable for consolidation points, stackable with accessories, suitable for up to 4 cables with an outer diameter of max. 7 mm, base plate with 2 cable inlets and 4 cable outlets, for attachment to flat surfaces, as well as mounting rail TH35 according to DIN EN 60715, C-rail or combination rail, splice cassette with integrated splice holder for 12 crimp splices for retrofitting, storage cassette and cover for retrofitting, variants: complete, storage cassette, splice cassette, cover