Non-insulated flexible duct

• 4" diameter, 40" long
• Ducting is specifically engineered to transport unconditioned air
• Handles high heat, high humidity and excessive CFMs with no duct failure or fatigue
• Triple laminated with industrial grade foil casting for durability
• An ultra-smooth double sealed core for frictionless and silent air flow
• "Rip-stop" prevents tearing
• Galvanized steel spring maintains duct shape and prevents rust
• Can withstand temperatures from -4° to 175°F
• 2 clamps included