Mueller 12x18 D.I.Y. Greenhouse - Manual (Page 11)

Mueller, Inc. 12x18 D.I.Y. Greenhouse Instructions; For additional information, see the D.I.Y Installation Video
11
RP-2
RP-2
RP-1
4" Purlin
6" Purlin
RP-1
ADDING ROOF PURLIN (RP-1 AND RP-2)
Open side of RP-1 and RP-2 faces to center of building