Mueller 12x21 (DIY) with Optional Center Girts User Manual
Mueller Special machinery
Mueller Inc – Slab mounted 12 x 21 DIY Back Yard Kit Instructions;
See the D.I.Y Installation Video
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Slab Mounted: 12x21 (DIY) with Optional Center Girts Instructions
Mueller DIY buildings are not engineered structures and do
not meet any specific building code criteria.