| 320 - 329 : SECONDARY ELEMENTS TO INTERNAL WALLS | ||
|---|---|---|
| 320 | Secondary Elemants to Internal Walls (Grouped) | |
| 321 | ||
| 322 | ||
| 323 | Window / Door openings and parts to fill them | |
| 324 | Window openings and windwos | |
| 325 | Doorways, room divider openings | |
| 326 | ||
| 327 | Hatch openings, service voids | |
| 328 | Others e.g. barred openings | |
| 329 | Parts and accessories | |