| Description | Containing: 1. Hope's power operated ventilating shutters. List no. 463. Feb 1965. 2. Hope's western thermoflow ventilators. List no.466. Sept 1965. 3. Hope's western ridge ventilators. List no. 467 Sept 1965. 4.Hope's cowlex extractor ventilators. List no. 468. Sept 1965. 5. Hope's range of ventilation design and installation services List no. 469 Sept. 1965 |