Lamps seem well made, but do not fill our needs. The lamp and collector can both be moved and locked into place - however we were expecting the lamp to be pointed in any direction rather than only one direction. (You cannot move the lamp to a 90 degree position - only a straight line!) Please email me an RMA document - Thank you! User's recommendation: If looking for a lamp and collector which can be used in a straight line (lamp does not rotate) this unit is well made and has two (2) light densities!