Window AC · shed · trailer · walk-in

Size the box before you buy the foam.

Load sheets for a walk-in you build yourself: beer storage, a farm box, a shed or trailer shell. Charts assume a perfect R-25 room in the shade. These don’t.

Typical 8 × 8 shed box, AC through the wall

Sheets 01–04 Checked against a horse-trailer build Estimates, not an engineered spec

No.SheetWhat you walk out with
01 Window AC size BTU rating after sun, door traffic, foam, and the job you are cooling. A unit size, or two units if the load is over 24k.
02 Foam board takeoff XPS, polyiso, or EPS to hit R-25. Shed, trailer, or room. Sheet count, tape, spray cans, and a materials price.
03 Power House meter, event pedestal, generator, or solar — pick one. Cost, circuit, or fuel for the source you actually have.
04 Jobs Beer kegs, fermentation, produce, hanging game, and jobs this kit cannot do. A target band and a preset on the AC sheet.