Use when installing a direct vent co-linear insert into a masonry chimney.

Kit includes: High-Wind Termination Cap and two pieces of Aluminum Flex lengths - one Red (exhaust), and one Green (air intake). See chart for diameters and lengths.

Why buy your (2) 3" Liners from Urban Supply

• Authorized Duravent Dealer — Full manufacturer warranty on every order.
• Free Shipping over $299 — Most orders ship free in the lower 48 (exclusions apply).
• Best Price Guarantee — Find it cheaper elsewhere? We'll match the price.
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• 30-Minute Response — [email protected] / (917) 540-6070, Mon–Fri 9 AM–9 PM EST.

Shipping & Delivery

Orders ship from the manufacturer warehouse within 1–3 business days. Parcel orders deliver in 5–10 business days; freight items in 7–14 business days with curbside drop-off. Tracking emailed automatically once your order ships.

Warranty & Returns

Backed by the full manufacturer warranty plus shipping insurance. If anything arrives damaged, contact us within 48 hours. See our 30-day return policy.