EFCO Special Purpose Windows Installation - Manual (Page 7)

EFCO CORPORATION 3/5/2014 PART NO. YW40 Page 4 of 7
Window Installation Instructions - General Overview Section -
5. Window Installation
A. The rough opening should be checked for the correct size as determined by tolerances listed
in the architectural specifications and the shop drawings.
B. Establish the face of the window line at the head, sill, and jambs. This reference is arrived at
by using the architectural plans, general contractor’s reference lines, and shop drawings.
C. Determine the high point of the masonry sill using a string line or transit and shim the balance
of the opening to match.
D. Do not fasten drapery tracks, ceiling supports, or convector covers to windows. The window
must be free to expand and contract.
E. Use appropriate shim/block in the frames at perimeter anchor locations. All blocking and
shims will be high strength plastic or non-corrosive materials Not by EFCO.
These recommendations are for general erection procedures only. For actual job
conditions, see the details on the shop drawings. For perimeter anchor type and spacing,
refer to the approved shop drawings or consult the project design professional.
High Point
Shim at Anchor Locations
Note: For proper vent operation and
drainage of windows, they must be
installed plumb & level.
Plumb Frame