RIGA™ Greenhouse Extension-Door KitDESCRIPTION To raise greenhouse 20 when placed on a stem wall. This kit setup above the build in door. Not recommended to adjust the height. For the RIGA XL model: The door opening in the wall should be 40" wide. For all Riga XL models includes extensions for 2 doors Please be aware the foundation frame is intended to be buried in the ground to anchor the greenhouse. It is not designed to be placed on a wall out of the ground. You don't need
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