Yardistry YP12856 6.7 X 9.7 Meridian Greenhouse: 100% premium cedar lumber, finished in a natural cedar stain color. Louvered base wall vent is necessary for optimum air intake and plant health. 16” wide lower shelf and 8” wide upper shelf surrounding two sides of the interior. Two - heat sensitive, automatic roof vent opener maintains temperature and humidity. Cedar door includes door latch and closer with a quick-hold feature to keep the door open. Double-wall polycarbonate windows are robust and durable, provide better insulation than single-wall polycarbonate, and deliver superior UV properties and resistance from fading. 6’ High Sidewalls provide room height, increasing light and air volume for healthy plant growth. The extra height allows customers to double up shelves and maximize the interior space. Tongue and groove style 32” high cedar base walls add a premium aesthetic and allow for storage of gardening tools that are out of sight from the exterior. The walls also provide protection from rock-shooting lawnmowers.