Triplelock 80m Dia x 1m Z PACK (Liner ONLY)
At a Glance
- Premium 316L grade stainless steel construction (0.10mm thick)
- Triplelock seam for a secure, leak-proof fit
- Suitable for gas and oil appliances
- Complies with BS EN 1856:2 and Kitemarked to BS 715
- Withstands temperatures up to 260°C
- Engineered for relining masonry chimneys

We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
- Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The Triplelock 80mm Diameter x 1m Z PACK (Liner ONLY) is a top-tier flexible flue liner specifically designed for relining masonry chimneys. Constructed from premium 316L grade stainless steel with a thickness of 0.10mm, this durable flue liner is ideal for appliances powered by gas and oils up to 28-second grade. It is engineered to handle temperatures up to 260°C, ensuring optimal performance and safety.
Featuring a unique TRIPLELOCK seam—folded in three planes—this flue liner ensures a secure and leak-proof fit. The product is rigorously tested and Kitemarked to BS 715, and compliant with BS EN 1856:2 standards. Installation is straightforward: secure from the top, pull the liner down the chimney, and finish the setup by securing and sealing the liner to a register plate or relevant flue components.
Annual maintenance is recommended to keep the system operating smoothly.
SKU: 4Z-80-1
Technical Specifications | |
---|---|
SKU | 4Z-80-1 |
Item | Triplelock 80mm Diameter x 1m Z PACK (Liner ONLY) |
Fuel Type | Gas and Oil |
Diameter Range | 80mm to 300mm |
Material | 0.10mm 316L Grade Stainless Steel |
Joint Method | Triplelock Seam |
Designations | EN1856-2 T250 N1 D V3 L50010 G |
Kitemarked | Yes |
CE Approved | Yes |
Warranty | 10 Year Conditional Warranty |
CPR | 2797-CPR-603464 |
Maximum Temperature | 260u00b0C |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
National Flues Ltd Verdict
The Triplelock 80mm Diameter x 1m Z PACK (Liner ONLY) is an exceptional choice for anyone upgrading or maintaining their chimney system. This high-quality flue liner is built for durability and efficiency, making it suitable for both gas and oil appliances. Trusted by tradespeople across the UK, National Flues ensures timely and reliable delivery to meet both retail and trade needs.
The Triplelock 80mm Diameter x 1m Z PACK (Liner ONLY) is designed to provide a secure and efficient lining for masonry chimneys, suitable for gas and oil heating appliances.
National Flues is a trusted supplier of high-quality fireplaces and flues, serving both retail and trade customers across the UK with reliable delivery and competitive pricing.
