I decided to remove the bell box cover on the old Wickes house alarm as the siren was not sounding on activation. Found a wire had corroded so repaired it and all good. However, being a clumsy oaf, I managed to stand on the cover which was brittle with age and therefore shattered. Have searched ebay for a replacement but no joy. The cover I need is the old 5 straight sided one with vents at either side, just wondering if anyone knows a source?