9,127.00 USD



Chehalis is a PREMIUM model built with the thickest wall of 70mm  (2 3/4)  and has a single wall thermal mass rating of R-12.   The windows and doors are premium grade with double glazing, fully weatherstripped and multi locking hardware. The kit is ready to mount on a concrete slab or wood floor. The tall front windows provide plenty of light for an interior with a vaulted ceiling and this model can be customized as required, make it larger, add windows and doors, or create your own design. Insulate the roof and floor and this becomes a comfortable extended living space with just a wall mounted HVAC heating/cooling system, ideal for an office, sewing or games room.


Kit includes:

  • Without floor ready to mount on slab or wood sub floor
  • (70mm) 2 3/4″ pre-cut numbered exterior walls
  • (70mm) 2 3/4″ pre-cut numbered interior walls
  • vaulted ceilings
  • roof purlins
  • tongue & groove ceiling/roof boards
  • fascia trims
  • PREMIUM double glazed wood windows
  • entry doors c/w locks, deadbolts, keys
  • window & door trims
  • interior doors c/w hardware 
  • threaded steel storm rods at junctions