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 subject to haulage or collection charges and VAT and are valid for 30 days. Price lists in PDF format are on the download page.
![]() |
Flue liners CE marked from 1st July 2013. |
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 | £27.24 | 14.3 | 360 x 360 | 230 |
![]() |
Straight flue liner 140mm tall |
12LS | £16.87 | 9.2 | 360 x 360 | 140 | |
![]() |
Liner bend 30° |
12B | £49.98 | 15.1 | 360 x 360 | 275 | |
![]() |
Throat Lintel 1000mm wide |
AF300/1000S | £103.13 | 83 | 1000 x 475 | 220 | |
![]() |
Lintel spacer gather |
300/1200 | £138.86 | 75 | 1200 x 475 | 220 | |
![]() |
Canopy connection block |
12CCB | £138.86 | 54 | 552 x 552 | 150 | |
![]() |
300mm round straight pot |
300RST750 | £212.05 | 51 | 360 | 750 | |
![]() |
Topguard steel cowl 350 wide |
TG350 | £147.68 | 3 | - | 245 |
Ancillary Products | Product | Product code | Price each |
Weight kg |
Width Depth | Height | |
![]() |
![]() |
Dunseal fireproof mortar 310ml | Dunseal | £6.36 | 0.6 | - | - |
![]() |
Void infil 20kg agg & 2kg cement |
Dunfil | £13.26 | 22 | - | - | |
![]() |
Smoke pellets - 6 per tube | Smoke | £10.80 | - | - | - | |
![]() |
Flue notice plate | Plate | £7.36 | - | - | - | |
![]() |
Air brick 9" x 3" (polypropylene) | REDG930 BUFFG930 |
£0.88 | 0.12 | 220 x 58 | 72 | |
![]() |
Cavity sleeve (black high impact styrene) | CSG935 | £4.79 | 0.17 | 218 x 230-280 | 72 |