Newell puts clear silicone on the box portion of the bed. They just squeeze it in the form of an "S" all over the bed box frame. This prevents the mattress from sliding off. No need for a lip; the mattress stays in place.
Simplicity is the key!
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Tuga & Karen Gaidry
1999 Newell 45 w/2 slides
Coach #512
2005 Pilot
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