Gray Metal Products galvanized steel furnace pipe distributes heated and cooled air through residential HVAC duct runs. The snap-lock longitudinal seam assembles in seconds without tools or fasteners - align the edges and snap closed for a smooth, leak-resistant joint.

• Diameter: 3"
• Length: 24"
• Gauge: 30 (lower gauge number = thicker steel wall)
• Galvanized steel resists rust and corrosion for long service life
• Snap-lock seam closes by hand - no rivets, screws, or tools required
• Fits standard round-duct elbows, takeoffs, registers, and reducers of the same diameter
• Manufacturer Part Number: 3-30-300

Tip: Seal joints with UL 181 foil tape or duct mastic - not cloth duct tape - for an airtight system. Support long horizontal runs every 4 to 6 feet with hanger straps to prevent sag.