Respond to these showcases www. ajplus. co. uk/ajdirect Readers may obtain information about these products by filling in the enquiry numbers on an AJ enquiry card. Advertisers wishing to promote their products on these pages should contact Chris Bond on 020 75056816 A series of five large circular Ritchlight TL17 framed dome rooflights from Brett Martin Daylight Systems has been installed to brighten the interior of the Knowledge Spa at the Royal Cornwall Hospital, Truro. The 3m-diameter tripleskin rooflights are glazed with solid clear polycarbonate.