Fortress is a precision engineered system of prefabricated PVC duct and fittings. It conceals and protects exposed refrigeration line sets， electrical cable/telephone wiring and water or drain pipes. It comprises extruded PVC duct plus a full range of 16 injection molded Polypropylene fittings， all of which meet the requirements of the current UL -94V-0 specification and are suitable for temperatures from -4 to 140 degrees F.
Tapered sides
Flat bottom
UV stable
Color fast
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