Dunbrik Mini Clearflow Gas Flue Block System Components
This system is a neat and efficient method of providing a flue for domestic gas fires in a new property. Fires must be suitable for ’pre-cast flues’, which includes many ‘living flame effect’ fires. The flue blocks are built into a party wall, the inner leaf of an exterior wall or against a partition wall and terminate at roof level through a gas flue terminal. In many cases there is no chimney breast intruding into the living area.
Gas Flue Blocks to BSEN 1858 (sizes in mm)
| Product/Code | Weight Kg | Width (mm) | Depth (mm) | Height (mm) | Coursing Height | ||
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Standard recess starter block (3 per flue) Code: 1ZM |
7.2 | 375 | 140 | 222 | 225 |
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Gather block for standard recess Code: 2GM |
12.9 | 381 | 140 | 222 | 225 | |
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Front lintel block (to form chimney breast) Code: 1ML |
6.0 | 560 | 100 | 65 | - | |
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Red set wide recess starter block (3 per
flue) Code: 1RM |
7.5 | 460 | 140 | 222 | 225 | |
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Red set wide gather block Code: 1GM |
16.5 | 460 | 140 | 222 | 225 | |
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M set deep & wide recess starter block
(3 per flue) Code: MS |
22.9 | 554 | 272 | 222 | 225 |
| Product/Code | Weight Kg | Width (mm) | Depth (mm) | Height (mm) | Coursing Height | ||
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M set deep & wide gatherblock Code: MG |
53.9 | 554 | 272 | 222 | 225 |
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B set recess block for special recess (3
per flue) Code: BRU |
40.9 | 900 | 367 | 268 | 278 | |
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B set gatherblock Code: BTL900 |
59.8 | 900 | 367 | 150 | 160 | |
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Dense backup block 100mm Code: MD100 |
25.6 | 525 | 100 | 215 | 225 | |
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Straight bonded gas flue block 224mm Code: 2M |
12.0 |
320 |
140 |
224 |
224 |
|
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Straight bonded gas flue block 148mm Code: 2M/150 |
7.8 | 320 | 140 | 148 | 148 |
| Product/Code | Weight Kg | Width (mm) | Depth (mm) | Height (mm) | Coursing Height | ||
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Straight bonded gas flue block 75mm Code: 2M/75 |
4.0 | 320 | 140 | 75 | 75 |
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95mm Lateral offset block gas flue Code: 3ME |
12.8 | 340 | 140 | 224 | 225 | |
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35mm Backset gas flue block Code: 3MS |
12.5 | 245 | 175 | 224 | 225 | |
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25mm Backset gas flue block Code: 3MU |
12.0 | 245 | 165 | 224 | 225 | |
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125mm Backset gas flue block Code: 2BM |
22.9 | 245 | 265 | 260 | 260 | |
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Double tonge flue block 190mm Code: 2MDT190 |
7.3 | 245 | 140 | 190 | 190 |
| Product/Code | Weight Kg | Width (mm) | Depth (mm) | Height (mm) | Coursing Height | ||
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Gas flue block without bonding nib 225mm Code: 2MN225 |
7.1 | 245 | 140 | 225 | 225 | |
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Gas flue block without bonding nib 150mm Code: 2MN150 |
4.9 | 245 | 140 | 150 | 150 | |
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Gas flue block without bonding nib 75mm Code: 2MN75 |
2.7 | 245 | 140 | 75 | 75 |
| Product/Code | Weight Kg | Width (mm) | Depth (mm) | Height (mm) | Coursing Height | ||
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Top exit gas flue transfer block Code: 4M |
10.4 | 265 | 200 | 160 | - |
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Top exit block with connector pipe Code: 4MP |
11.0 | 265 | 200 | 230 | - | |
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Side exit gas flue transfer block Code: 5M |
24.6 | 285 | 280 | 290 | - | |
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Side exit block with connector pipe Code: 5MP |
26.8 | 285 | 295 | 330 | - |



























