Not sure there are any real rules for slide widths. On our former DP bedroom slides were about 2 feet each side, kitchen slide was about 27 inches, and the dining room/living room slide was about 3 feet. That made us just under fifteen feet wide with all slides extended. The Gemini, having one slide on the drivers side, about 20 inches, if that, and one in back, adds length, not width, so we take up much less space in sites.
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