Forum Discussion
Taurus18
Jul 06, 2016Explorer
fred42 wrote:
Taurus18,
Not sure if you have the standard Lippert ramp door that a lot of us have, but I wanted to let you know about the structure of this door.
The first surprising thing is that there is absolutely no structural members, word or metal, anywhere within the interior of the door. Only the perimeter has a metal frame. The strength comes from high pressure lamination of otherwise weak materials.
The overall 1 5/8" cross-section looks like this: (values are approximate and I am calling the materials as they appear to me)
Outside
1/16" fiberglass
1/8" composite
1 1/4" white Styrofoam
1/8" luan plywood
1/16" non-skid material
Inside
This the 2016 model that I have, They may make other configurations.
Close! Since mine popped out of the frame Monday I was able to get a good look and it appears to be:
Outside
1/16" fiberglass
1/8" plywood
1 1/2" foam
1/8" plywood
1/8" non skid material.
My plan going back will be:
Outside
1/16" fiberglass (reusing existing)
1/4" plywood
1" foam
3/8" plywood
1/8" non skid (using existing)
plus I will have 4 1"x1 5/8" 'studs' running bottom to top and a 10" aluminum flashing on the outside to reinforce where the hinge system bolts on.
total cost of material including a T-40 Torx bit = $195
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