Alton Durham Cedar GreenhouseAlton Durham Cedar Greenhouse The stunning build quality of this new Alton cedar wood model is evident throughout. Whether its the mortice and tenon joints, the cast aluminium spandrels and finials, the elegant guttering system or the victorian cast aluminium spandrels that strengthen the greenhouse at both the eaves and the ridge, youll be amazed by the attention to detail and satisfying quality in this greenhouse which combines modern techniques