Designer Bulk Packs each feature one of the five different architectural styles represented in the modular system. Each pack contains plans for three specific buildings and all plastic modular parts needed to finish any one of the three. Styrene roof material, clear window material, complete instructions, building plans and painting and weathering tips are included.
 
Rectangular window industrial buildings premiered in the late 1800s. Popular as factories, warehouses and institutional buildings, they maintain their profiles in cities and towns today.