This was the first version of the L-4 and was known as a "Grange Hall" lookout because of its appearance. The gable roof caused structural problems from uneven snow deposition. Even though the life span of this design was short, it was built in great numbers during it's three years, and, where they were located so as to not be affected by snow, many still exist. Locally, excellent reconstructed examples exist on Sand Mountain, Willamette NF, and East Butte, Deschutes NF.