90 degree corner adapter kit. Dimensions: 123.3 x 393.1 mm. Supplied with: M8 screw (30 mm) x 4; M8 screw cap x 6; Split washer x 6; Plain washer x 6. Suitable for VD120D/220D/320D Series, FD120D/220D/320D Series, FE110/420/520 Series, FER521 and SD220/SD2322 models.