In regards to door width, doors up to 27" wide order 1 kit, while doors over 27" order 2 of the appropriate kit.
So if your door is 28"W x 54"H, a kit is not available due to the height of the door. But if your door is 28"H x 54"W, you will want to order 2 quantities of the Medium kit SKU#66721.
by Camping World – May 11, 2016
Hatchlifts are retrofit hydraulic lift kits designed for installation on lightweight RV doors.
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