Reduced total installed cost—fast, economical installation. • Long standard lengths help reduce waste—easily cut to exact lengths, or spliced, at the job. • Easily shaped to fit oval inlets. • Underwriters Laboratories Listed. • Complies with NFPA Standards 90A and 90B and most local, state and federal standards or codes. • Maintenance free under normal conditions—highly resistant to rust, corrosion or fungus. • Strict quality control over all raw materials and completed ducts. • Will not balloon at recommended operating pressure. • Will not collapse at recommended operating pressure. • Assists absorbing system vibration transmitted through ductwork. • Allows efficient safe installation for bathroom ventilating needs. • Available through broad national distribution. • Packaged compactly for efficient transporting, storing and handling.