Burglar Alarm Thin Window Lead Foil Tape Roll 3/8 inch with metal case

Description

This is new old stock of burglar alarm window foil tape
it is 3/8 in wide
when originally  installed a slight coat of
clear varnish was brushed on window foil
was stretched on top.  once foil  a hears
to window a coat of
clear varnish was brushed over to keep in place
and a square corner was made or curve it
you do not cut tape when put on window
should be one continuous piece