| Reference Number | TPC/3/10/1 |
| Title | Wiring Diagram for Sound/Fire Doors Lower Theatre |
| Level | Item |
| Date | 11 March 1976 |
| Description | Mole-Richardson (Stage & Studio Engineering) Ltd drawing number D.18-384 issue D. Drawn by J T. Original date 9 February 1974. |
| Extent | 1 drawing |
| Series | National Theatre Technical Manual for Sound/Fire Doors |