Mueller 18x21 (D.I.Y.) with Optional Center Girts and Floor Kit - Manual (Page 4)

Mueller, Inc. 18x21 DIY Back Yard Kit Instructions; For additional information, see the D.I.Y. Installation Video
4
NOTE: Leading and trailing edge of
channels are overbent for a tight
fit. Spread apart as needed to
nest the purlin into the channel.
BaSE LaYOUT (Bc-1 aND BP-1)
Leveling and proper blocking is
critical for the base layout.
Bc-1
(Base channel)
Bc-1
(Base channel)
BP-1
(Base Purlin)
BP-1
(Base Purlin)
sTep 1
Insert BP-1
into BC-1
sTep 2
Add MKB-1 (Galvanized MKB-2)
to top of BP-1 into BC-1
sTep 3