|
|
Int.Dia |
80 |
100 |
125 |
150 |
|
Ext Dia |
125 |
150 |
180 |
200 |
|
A |
416 |
450 |
490 |
490 |
|
B |
416 |
450 |
490 |
490 |
|
C |
135 |
160 |
190 |
212 |
A firestop is used where a chimney penetrates a slab or joist area. It consists of two plates and a clamping collar. Its purpose is to centralise the chimney and maintain a 80mm gap to combustible materials. It also acts as a load bearing support member due to its clamping collar. |