(Model #153L) Simple. Safe. Versatile. Continuously adjustable. (20 cm wide up to 58 cm long) For running SDS-PAGE , DNA sequencing or preparative gels. Buffer capacity: upper: 400ml, lower: 400ml Extra heavy duty construction.FEATURES AND OPTIONS: Continuously adjustable upper buffer chamber Many sizes of in stock- glass plates Both in stock and custom combs and spacers are available Aluminum heat exchangers