Stewart Filmscreen Corp LCD Rear-Projection TV - Manual (Page 8)

Wedge frame
The wedge frame is used in videowalls, simulators, and command and
control centers. The wedge profile tapers down on the image side to a knife
edge where it contacts the screen.
Multiple wedge frames can be installed in a containment frame.
Quick-Stall
The Quick-Stall frame allows for easy installation of a rigid rear screen by
eliminating the need for a finish trim. The Quick-Stall frame covers
unfinished molding with a built-in 5/8" (1.6 cm) trim.
The Quick-Stall frame requires a wall opening 5” (12.7 cm) larger in both
height and width than the screen image.
6 Stewart Filmscreen Corporation
Figure 9. Quick-Stall
Figure 7. Wedge frame Figure 8. Detail of two Wedge frames in a
partial containment frame