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Draft
Free 8 3/8" diameter cast aluminum talk thru is well
suited for exposed application. Natural voice communication
is obtained through the tensed clear plastic diaphragm while
eliminating air flow. Perforated clear security screen on
customer side protects the diaphragm. Talk thru has bullet
resistant shield on rear side. Unit is adjustable for glazing
from 1/4" to 1 7/8" thick. Optional spacer ring
is required for glass less than 1 3/16" thick.
Denote
glass thickness of window when ordering.
Specify finish: clear or dark bronze anodize.
Requires
7 1/2" diameter hole.
Class
I or III bullet resistant.
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