This can vary due to your boiler but for most purposes 75mm above the boiler flue. Protects your boiler from damaging rain ingress in heavy rain and wind. It was also protect your boiler in the event of guttering failure.
eBay
1-10pcs 20/25/32/40/50/60/75/89/110/140/160/165/200/250/315/400mm PVC Pipe Plug Cap Tube Cover White Drainage Pipe protect cover
Aliexpress UK
Enhanced Design: Unlike other guards that may be short or flimsy, this model features a simple yet aesthetically pleasing design that fits well with the sealing ring, enhancing both functionality and appearance.
eBay
20Pcs Fertilizer Cover Basket Garden Bonsai Planting Tool Yard Automatic Releasing Fertilizer Nursery Box With Cover 3 Sizes
Aliexpress UK
It is easy to replace the broken one. It has a simple appearance, but a practical function. You do not need to worry about that the rain will drop into the chimney anymore with this cap. 4 Pcs Pigeon Nest Egg Bowl Birds Breeding Nests Poultry Nesting Boxes.
eBay
Outdoor Swing Chair Awning Garden Waterproof Swing Canopy Roof Cover Outdoor Garden Swing Chair Canopy Roof Shade Swing Cover
Aliexpress UK
The Vaillant flue cover internal is designed specifically for use with storage tank water heaters powered by gas or petrol. This white cover, made by the reputable brand Worcester, is designed to fit over the flue of a boiler and provides a clean and efficient way to heat water in your home. Perfect for maintaining a comfortable temperature in your living space, this flue cover is a practical and essential component for any heating system.
eBay
Only Ironing Board Protective Cover Home Universal Silver Coated Padded Ironing Board Cover Pad Heavy Heat Resistant
Aliexpress UK
The 11” Round Terminal Guard Boiler Flue Outlet Basket is a stainless steel cage cover designed to protect the outlet of a boiler flue. This UK-manufactured unit is a single piece and does not include any custom bundles. Perfect for use in industrial or commercial settings, this durable basket cover ensures that the boiler flue remains secure and prevents debris or animals from entering the system. Its round shape and sturdy construction make it an essential component for maintaining the safety and efficiency of any boiler installation.
eBay
3-Seat Swing Canopy Garden Swing Chair Cover Reinforced Corners Replacement Top Cover Waterproof And Dirt-resistant For Garden
Aliexpress UK
Not suitable for condensing boiler flues or coastal installations, due to corrosive effects of both types of installation. ZINC PLATED.
eBay
210D Oxford Cloth Protective Cover For Garden Table 1 Piece Garden Furniture Cover Waterproof and Windproof Uv
Aliexpress UK
Enhanced Design: Unlike other guards that may be short or flimsy, this model features a simple yet aesthetically pleasing design that fits well with the sealing ring, enhancing both functionality and appearance.
eBay
Portable Air Conditioner Hose Cover Wrap Dustproof Heat Insulation AC Hose Sleeve Air Cloth Air Outlet Pipe Tube Hose Cover
Aliexpress UK
Enhanced Design: Unlike other guards that may be short or flimsy, this model features a simple yet aesthetically pleasing design that fits well with the sealing ring, enhancing both functionality and appearance.
eBay
Terrace Patio Furniture Cover Waterproof 210d Furniture Cover, Suitable For Outdoor Sofa Set
Aliexpress UK