STIMSON DURATEMP SIDING ID PAGE:
The Identifiable Features:
The grooves have striations that run up and down the entire length.
The pattern inside the box is another identifiable feature.
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The Duratemp Panel edge can be seen in the mirror. It has a plywood back with a Hardboard composite surface.In this particular case the Duratemp had a band of LP siding placed on it. The LP is visible over the Duratemp here.
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More photos:

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DuraTemp with a LP Band
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