They measure pretty close, but the camper bases are less thick so maybe that's the difference you were seeing. Mine are buried in the garage or I'd measure again. 

Stephen

Mobile

> On Oct 18, 2016, at 1:07 PM, JordanVw@aol.com wrote:
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> steve are you sure about that?     i have tried using  GL  grey seatbottom covers to recover camper seatbottoms and they are too long for the camper seatbottoms.....
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> In a message dated 10/15/2016 10:22:36 A.M. Eastern Daylight Time, bike2vcu@YAHOO.COM writes:
> Seat bases are the same size but the Westy seat back is positioned further forward relative to the base, probably to assist in the spin. 
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