Sapa Alumax ProLine PL70, Installation Instructions Manual

Page 6 of 9

5

Glass Clips and Threshold – Mark the center point of the sill, 

along the centerline, 

established

 in step one. Make a mark 

1/2” over toward the Fixed Panel [F] side and 15/16” outside 

of the centerline.  Make another mark 2” over from the wall and 

15/16” outside of the centerline.  Drill 

a 1/4”

 hole at each of these 

marks.  Clean the area around the holes and put a little silicone 

into each hole.  Press the Glass Clip Anchors [G] into the hole until 

fully seated.  

Measure the sill width at the centerline, and cut the 

Threshold [H] to that dimension.  Place the Threshold on the sill next 

to the Clip holes.  Transfer the Glass Clip [I] hole locations on the 

sill over to the Threshold. Notch or drill a 3/8” hole in the Threshold, 

for the Glass Clip Screws [J] to pass through.  You can also cut 

about a 3/8” section out of the threshold at each location. Place the 

Threshold on the sill and place the Glass Clips over it, at the correct 

locations. Align the Threshold so that it is straight.  Tape it down in 

a few spots and lightly trace the inside edge.  Remove the tape, 

Threshold and Glass Clips.  Run a bead of caulk, approximately 

1/8” outside of the mark you just made.  Replace the Threshold and 

fasten the Glass Clips to the sill. Install the Vinyl Inserts [K] into the 

Glass Clips.  

CAUTION

:  Tape the threshold down to keep it from 

being moved during the rest of the installation.

6

Center Guide – Make a mark on the centerline approximately 1 

1/2” toward the door side.  Place the Center Guide [L] on the 

new mark, centered on the mark.  Mark the center of the attachment 

holes and, remove the Center Guide.  Drill two 5/16” holes at the 

center guide attachment locations.  Clean the area around the 

holes and put a little silicone into each hole.  Press the Center 

Guide Anchors [M] into the holes until the lip is flush with the sill.  

IMPORTANT

:  Make sure that the lobe on the Center Guide Insert 

[N] is engaged with the proper slot in the Center Guide, as shown.  

Mount the Center Guide with the Center Guide Screws [O].

c

L

Minimum 1.5" from outside 

edge of curb to    of Door