Sears offered three grades in all their lines: Good, better and best. In the 1922 Sears Modern Homes catalog, the housing lines were known as Honor-Bilt, Econo Built (later known as “Standard Built) and Lighter Built.
Honor-Bilt homes (their best grade and most popular line) utilized traditional construction standards, such as double headers over the doors and windows, double floors (primary floors over subfloors), exterior sheathing under clapboard or cedar shingles and wall studs on 16-inch centers.
“Standard Built” houses had wall studs on 24-inch centers, single headers, no subfloor and no underlying exterior sheathing. They were pretty modest housing.
Lighter Built was what we’d (today) describe as a hunting shack, best suited for areas with warm weather, calm winds and serene wildlife. One angry moose could do a lot of damage to your “Lighter Built” shack/house. In later years, Econo Built was renamed to “Standard Built.” The cheapest grade of Sears homes (known as “Lighter Built” in 1922) was eventually dropped.
There was also another line of houses known as Simplex Sectional Houses. See this link for more information on these tiny cottages.