Description
Top Insert Sleeve with Rain Cap – 125mm: Enhanced Rain Protection and Liner Installation Ease
The Top Insert Sleeve with Rain Cap – 125mm provides superior rain protection at the chimney’s apex while offering an integrated protection sleeve. This sleeve conveniently fits inside the flexible liner, simplifying clamping.
Overview:
MF20 MI-FLEX accessories constitute a comprehensive set of installation fittings tailored for seamless integration with MI-FLEX 316 and 904 flexible flue liners, ensuring a complete chimney system when assembled together.
General Application:
Designed for use in conjunction with MI-FLEX Multi-fuel flexible flue liners, meeting the criteria outlined in Building Regulations Document J. Flexibility in installation is paramount, but it’s crucial to fully enclose flexible flue liners within a masonry chimney. Suitable for appliances operating up to 600 degrees (T600 designation) and compatible with Wood.
Terminals:
Essential for preventing water ingress and Vermin/Birds from entering the flue. Utilizing a protection sleeve like this aids in supporting the vertical weight of the flue liner, requiring sound chimney construction, crack-free chimney pots, and proper flaunching at the stack’s top.
Specific Application:
This Top Insert Sleeve with Rain Cap – 125mm provides exceptional rain protection at the chimney’s top while offering an integrated protection sleeve that facilitates easier clamping onto the flexible liner, enhancing installation convenience.
Maintenance:
Proper chimney system design should allow hassle-free provision for sweeping and maintenance, preferably by a professional. Avoid using chemical cleaners or mild steel tools on stainless steel chimneys. Routine cleaning, inspection, and maintenance should occur at least annually, with solid fuel appliance chimneys requiring biannual sweeping to prevent blockages or deposits, including potential bird nests.
Specifications:
Designation: MI-FLEX Accessories MF20
System: 316L
Material: Natural / Stainless Steel
Colour Finish: Natural / Stainless Steel
Fuels: Wood, Oil, Gas, Smokeless coal
Approvals: BSEN 1856-2 T600 N1 W V2 L50012 G, HETAS/CE
Dimensions: 125mm
The Top Insert Sleeve with Rain Cap – 125mm ensures unparalleled rain protection at the chimney’s summit while offering an integrated sleeve, streamlining the installation process for your flexible flue liner. It complements a comprehensive array of components designed for durability and ease of use.

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