Wall Sleeve 45° Adjustable - Ø 200
At a Glance
- Durable 304-grade stainless steel outer skin with 0.40mm thickness
- Robust 316L stainless steel inner skin for enhanced longevity
- Pre-cut at a 45° angle and adjustable for a custom wall fit
- High-density rockwool insulation: 200kg/m³ (TWPro) and 128kg/m³ (KC)
- HETAS approved, CE marked and compliant with EN1856-1 standards
- Easy installation with safe clearance from combustible materials using a locking band

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
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 Wall Sleeve 45° Adjustable - Ø 200 is an essential accessory for any chimney flue system, particularly for solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, and oil boilers. Constructed with a durable 304-grade stainless steel outer skin and a 316-grade stainless steel inner skin, this wall sleeve provides robust protection. The insulation comprises compressed rockwool, ensuring a high density of 200kg/m³ for TWPro and 128kg/m³ for KC, making it highly effective.
This wall sleeve is pre-cut at a 45° angle and can be manually adjusted within the wall for a tailored fit. It is designed to keep a safe distance from any combustible materials (wood, plasterboard), making installation straightforward using a Locking Band. Additionally, TWPro is HETAS approved and CE marked, conforming to various EN1856-1 standards.
SKU: 15-200-100
Technical Specifications | |
---|---|
SKU | 15-200-100 |
Dimensions | u00d8 200 |
Angle | 45u00b0 Adjustable |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Insulation Density | 200kg/mu00b3 (TWPro) / 128kg/mu00b3 (KC) |
Approvals | HETAS / CE |
Certification Standard | EN1856-1 |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Wall Sleeve 45° Adjustable - Ø 200 is a top-notch choice for anyone looking to protect their chimney flue system. Offering high-quality construction and robust performance, this product meets HETAS standards and is CE marked. Whether you're retail or trade, National Flues delivers nationwide and is rarely beaten on price.
The Wall Sleeve 45° Adjustable - Ø 200 is used to protect the chimney flue as it passes through an outside wall, ensuring safe and efficient operation.
National Flues supplies high-quality fireplaces and flue systems to both retail and trade customers across the UK. Known for reliability, competitive pricing, and nationwide delivery, National Flues is a trusted name in the industry.
