This month's product news in brief

•The Door and Hardware Federation has issued a best practice guide to specifying thief-resistant lock assemblies. Specifiers can consult the guide on the type of door fittings, hinged or sliding door options, cylinder or lever locks, and manual or automatic modes.

•The British Standards Institute has issued a revised version of its guidance for natural daylight in buildings, BS 8206-2:2008 Lighting for Buildings. The guide includes a new section on balancing the need to increase daylight and save energy versus the dangers of overheating through solar gain. The suggested method of modelling daylight at the design stage is based on research by De Montfort University academic Dr John Mardaljevic.

•Specifiers in search of a tropical hardwood for doors and windows that still meets sustainability credentials can now choose Okoume timber, imported from Gabon by timber company Rougier. The plantations where the timber is grown have now been certified by the Forestry Stewardship Council.

•SAS International, best known as a manufacturer of ceiling components, has boosted production of its internal door portfolio. The company now has a range of 12,000 timber doors in stock and can deliver bespoke orders on a lead time of two weeks.