This Variable Contrast/Constant Exposure enlarger features two independent filtration channels. One is calibrated for Kodak Polycontrast III RC, the other for Ilford Multigrade III and compatible papers. Specifications: Column to Lens Center: 9 1/2 (24cm) Baseboard: 18 x 23 x 1 (46cm x 58cm x 2.5cm) Girder: 42 (107cm) Max. Height: 48 (122cm) Max. Bellows Ext.: 5 1/2 (14cm) Net Weight: 36 lbs. (7.26kg) 120V AC, 50/60Hz Negative carrier and lens not included