Rev: 03.19.21 Page 6 CCD-0004319
Recommended Wall Construction or Equivalent
Travel Trailer Lippert In-Wall
Opening perimeter needs to be 1" x 3" .060" (25.4mm x 76.2mm 1.5mm) aluminum for the header and
vertical uprights. The header (Fig. 5) should extend 2' (609.6mm) beyond the vertical uprights for extra
support shown in (Fig. 5). The vertical uprights need to be stuffed with wood for securing. If the vertical
uprights have a minimum wall thickness of .125", the uprights do not need to be stuffed with wood. If
uprights are not stuffed and wall thickness is below .125", interior clamps need to be added to the system.
Upright wall thickness below .055" is not acceptable.
Fig. 3 - Laminate
Sidewall
Standard outrigger placement will apply every 48” for laminate trailers with at least 6” of wall structure
under the slide room floor and rollers mounted on the wall (Fig. 3).
For stick and tin trailers (Fig. 4), one standard outrigger is to be placed at the beginning and end of each
slide room opening. A minimum of two slide outriggers will be required under each slide room. Slide
outriggers should be placed under the heaviest points of the room. If the slide room is at least 108", a third
slide outrigger will be required. Add an additional slide outrigger for every 36" thereafter.
NOTE: For stick and tin trailers, Lippert Components recommends that the header and footer mirror each
other in size if mounting rollers on the sidewall. Please reference the supplier's span table for header
size and length. See figure 16 for specific roller spacing.
Fig. 4 - Stick and Tin
Wall Chart
Thickness Structure
Greater than or equal to .125" Non Stuffed
Less than .125" to .055" Stuffed or Inside Clamp
Less than .055" Not Approved
6" Minimum
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Sidewall
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Slide-out
Outrigger
48"
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Slide-out
Slide
Outriggers
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