Pella Impervia 802Q0101 - Manual (Page 6)

APPLYING INSTALLATION FINS
A. Slide the precut bottom fin into
the frame sill groove located on the
bottom window frame member.
Frame
sill groove
Frame jamb groove
Frame head groove
C
B
B
A
B. Install the 2 precut side fins into
the top of the frame jamb grooves
located on the side frame members
of the window. Slide the fins into
place.
Note: The side fins must overlap
the exterior of the bottom fin.
C. Install and slide the precut top fin
into the frame head groove located
in the top frame member.
Note: The top fin must overlap
the exterior of the side fins.
D. Seal the over-lapping fin joints with sealant.
TO INSTALL THE WINDOW(S) PROCEED TO STEP 2C.