Fortress is constructed of strong, extruded PVC lengths and injection-molded fittings that are highly UV and weather resistant. Fortress is made specifically for the U.S. market with full eight-foot lengths to reduce joints and waste with two deep profiles-3.5-inches for standard linesets and 4.5-inches for heavily-insulated or multiple linesets. Four colors of white, ivory, brown and gray coordinate with most condenser and home exterior colors.
Other features include:
- One-year warranty
- Suitable for temperatures -4°to 140°F
- Two adjustable lineset retainer clips included with each duct length
- Specially-designed sweep elbows accommodate long radius 90° bends
- Extensive range of 16 fittings accommodates any application
- Stainless steel screws eliminate rust marks