| Perforation | Slots per "Block" | Edge - non - slotted | Perforation ratio (board) |
Board dimensions (Standard sizes) |
Furring channel b mm max |
Edge designs | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lateral | Long |
Lateral | Long |
Width mm | Length mm | 4 SK | 4 AK | ||||
| 8/18 R | 30 | 30 | 41 | 41 | 12.1 | 1224 | 2448 | 312.5 | • | - | |
| 12/25 R | 19 | 19 | 69 | 69 | 11.3 | 1200 | 2400 | 300 | • | • | |
| 12/25 Q | 19 | 19 | 69 | 69 | 14.4 | 1200 | 2400 | 300 | • | • | |
