Alton Cambridge Cedar GreenhouseAlton Cambridge Cedar Greenhouse This new porch model from alton has been long awaited by gardeners. The Victorians knew a thing or two about greenhouses, they took them very seriously to protect their expensive exotic plants that were brought back by explorers overseas. the steep pitch of 45 degrees on these models gives better water run off, better light transmission and a more airy feel inside the greenhouse. The porch design adds a real feature to