Dunbrik A1 Concrete Flue Liners 300mm Internal Square
For fireplace openings up to 800mm by 750mm or equivalent and canopy hoods
The Dunbrik A1 Concrete Flue Liner Systems are used in the construction of domestic chimneys suitable for all types of domestic fires and stoves. Householders can burn any domestic fuel including coal and properly seasoned wood or install any domestic gas fire including flame effect fires.
Prices are ex-works and subject to VAT. Price lists for all flue ranges with carriage etc. are on the download page.
Liner system to BSEN 1857 (sizes in mm) - 300mm internal square liners
| Product | Product code | Price each |
Weight kg |
Width Depth | Height | ||
![]() |
![]() |
Straight flue liner 230mm tall |
12L | £19.90 | 14.3 | 360 x 360 | 230 |
![]() |
Straight flue liner 140mm tall |
12LS | £12.33 | 9.2 | 360 x 360 | 140 | |
![]() |
Liner bend 30 degree |
12B | £36.52 | 15.1 | 360 x 360 | 275 | |
![]() |
Throat Lintel 1000mm wide |
AF300/1000S | £56.44 | 83 | 1000 x 475 | 220 | |
![]() |
Lintel spacer gather |
300/1200 | £102.56 | 75 | 1200 x 475 | 220 | |
![]() |
Raft Lintel for canopy hood |
CH300/1200 | £102.56 | 77 | 1200 x 510 | 150 / 75 | |
![]() |
300mm round straight pot |
300RST750 | £125.63 | 51 | 360 | 750 | |
![]() |
Topguard steel cowl 350 wide |
TG350 | £116.24 | 3 | - | 245 |











