Fuente: WIPO "apiculture" It has frames situated at several levels in common body. The common inner space is separated vertically at each level at: case space (20) with frames grouped in a case (15); one transverse redirecting frame space (12) for collocation a system for redirecting the bees between all the separate spaces; and one transverse watering space (32). The frames - freed from the redirected bees could be taken out laterally. The queen bee can be directed from each case space (20) to exactly defined single frame (10) in the transverse redirecting frame space (12) in order to be found on it. The access to each separate inner space is independent - to the upmost one - by laterally sliding cover (21) and to the other levels - sideward through separate movable outer walls (8). Watering goes through two parallel and independently functioning watering systems, independently connected by gravity through the spillways of the racks (25).