Specification Guide   Expanded polystyrene block mould produce a normal bloack size of 2440x1220x710 or 610, however other special sizes up to 7300mm long are available. Block Type Target Weight kg/m3 Light Weight / PKG 10 Light Weight 10 Light Weight Small Bead 12 Medium Small Bead 15 EPS70 ( SDN ) 15 HDN 18 EHD 24 UHD 30 All grades are available Flame Retardent bead at no extra cost Please click Here for a technical document from the British Plastics Federation     Styro-Tech Ltd, Unit 5, Kingfisher Est, Charles St, West Bromwich, West Midlands, B70 0AT Tel: 0121 520 6343 Fax: 0121 520 4851 Email:info@styrotech.uk.com