11
Opening
Width
(mm)
Opening
Height
(mm)
Opening
Width x
Height
Floor to flue top height / Flue Diameter
Height
3.0m
Height
4.5m
Height
6.0m
Height
9.0m
Height
15.0m
350
550
1925cm2
175 Dia.
175 Dia.
175 Dia.
175 Dia.
175 Dia.
400
550
2200cm2
175 Dia.
175 Dia.
175 Dia.
175 Dia.
175 Dia.
460
460
2116cm2
175 Dia.
175 Dia.
175 Dia.
175 Dia.
175 Dia.
460
550
2530cm2
200 Dia.
175 Dia.
175 Dia.
175 Dia.
175 Dia.
460
610
2806cm2
200 Dia.
200 Dia.
175 Dia.
175 Dia.
175 Dia.
610
460
2806cm2
200 Dia.
200 Dia.
175 Dia.
175 Dia.
175 Dia.
610
610
3721cm2
250 Dia.
225 Dia.
200 Dia.
200 Dia.
175 Dia.
610
760
4636cm2
300 Dia.
250 Dia.
250 Dia.
225 Dia.
200 Dia.
760
460
3496cm2
225 Dia.
225 Dia.
200 Dia.
200 Dia.
175 Dia.
760
610
4636cm2
250 Dia.
250 Dia.
250 Dia.
225 Dia.
200 Dia.
760
760
5776cm2
300 Dia.
300 Dia.
250 Dia.
250 Dia.
225 Dia.
760
910
6916cm2
350 Dia.
300 Dia.
300 Dia.
250 Dia.
250 Dia.
910
460
4186cm2
250 Dia.
225 Dia.
225 Dia.
200 Dia.
200 Dia.
910
610
5551cm2
300 Dia.
300 Dia.
250 Dia.
250 Dia.
225 Dia.
910
760
6916cm2
350 Dia.
300 Dia.
300 Dia.
250 Dia.
250 Dia.
910
910
8281cm2
350 Dia.
350 Dia.
300 Dia.
300 Dia.
250 Dia.
910
1070
9737cm2
*********
350 Dia.
350 Dia.
300 Dia.
300 Dia.
1070
460
4922cm2
300 Dia.
250 Dia.
250 Dia.
225 Dia.
200 Dia.
1070
610
6527cm2
300 Dia.
300 Dia.
300 Dia.
250 Dia.
250 Dia.
1070
760
8132cm2
350 Dia.
350 Dia.
300 Dia.
300 Dia.
250 Dia.
1070
910
9737cm2
*********
350 Dia.
350 Dia.
300 Dia.
300 Dia.
1070
1070
11449cm2
*********
*********
350 Dia.
350 Dia.
300 Dia.
1070
1220
13054cm2
*********
*********
*********
350 Dia.
350 Dia.
1220
460
5612cm2
300 Dia.
300 Dia.
250 Dia.
250 Dia.
225 Dia.
1220
610
7442cm2
350 Dia.
300 Dia.
300 Dia.
300 Dia.
250 Dia.
1220
760
9272cm2
*********
350 Dia.
350 Dia.
300 Dia.
300 Dia.
1220
910
11102cm2
*********
*********
350 Dia.
350 Dia.
300 Dia.
1220
1070
13054cm2
*********
*********
*********
350 Dia.
350 Dia.
1220
1220
14884cm2
*********
*********
*********
350 Dia.
350 Dia.
1520
460
6992cm2
300 Dia.
300 Dia.
300 Dia.
250 Dia.
250 Dia.
1520
610
9272cm2
*********
350 Dia.
350 Dia.
300 Dia.
300 Dia.
1520
760
11552cm2
*********
*********
350 Dia.
350 Dia.
300 Dia.
1520
910
13831cm2
*********
*********
*********
350 Dia.
350 Dia.
1520
1070
16264cm2
*********
*********
*********
*********
350 Dia.
1520
1220
18544cm2
*********
*********
*********
*********
*********
Below is a guide to the flue diameter and minimum flue heights for different size openings.
NOTE - This table is a rough guide, due to some complex flue systems in some dwellings
the suggested table may still be inadequate, contact a flue specialist for more advice.