WINDOWS
WINDOW
FRAME DETAILS: Most shelters
incorporate our "independent" extruded aluminum window
frame which has an alignment lip -- no exposed hardware on the
outside and inconspicuous pop rivets finished to match the shelter
on the inside. These window frames are used on all four sides
of the window with a continuous vinyl gasket and four mitered
corners with hidden fasteners.
Other window frame details are
available including the "Chicago" type window frame
with the alignment lip and rivets on the same side for use where
shelters are installed against building walls or other situations
where windows must be removed from the inside for future maintenance.
Also available are "Semi-frameless
Glass" details with frames on top and bottom only. This
can only be used with glass not plastic glazing and the glass
must have polished edges.
GLAZING MATERIALS: All Columbia
Shelters are available with a choice of glazing materials. The
most basic of these is 1/4" Acrylic (Plexiglass). Acrylic
is fairly unbreakable, is considered safety glazing, is relatively
inexpensive, and replacement panels are easy to obtain.
The next possibility would be 1/4"
Clear Tempered Glass. Tempered Glass has the hardest surface
to scratch, but is more easily broken than plastic glazing materials,
such as acrylic or polycarbonate. Tempered Glass is relatively
inexpensive, but cannot be cut to size once it is tempered,
and, therefore, must be made to order. It will be more expensive
and more difficult to obtain replacement panels.
Next step up from Tempered Glass
would be 1/4' Clear "Lexan" or polycarbonate
plastic. 'texan" is almost unbreakable, but has the softest
surface and is the most easily scratched. It is about double
the price of Acrylic or Tempered Glass, and it is fairly easy
to obtain a replacement panel.
Next step up fmm 'texan" is
a type of mar-resistant polycarbonate commonly referred to as-"Margard".
This material is similar to "Lexan", but has a clear
coating on both sides which makes it more resistant to minor
scratching, and more easily cleaned if marked up with graffiti.
It is the best of the vandal-resistant glazing possibilities,
but is the most expensive. Pilcewise, it is slightly more than
double the cost of "Lexan". It is fairly easy to obtain
replacement 'Margard" panels.
All of the above glazing materials
can also be furnished with a bronze tint as well as clear. All
Columbia Shelters are designed with unique window frames and
gaskets which can accept any of the above four glazing possibilities.
Therefore, it is a simple operation to upgrade windows from
one material to another at a future date.
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