Supply and fix best quality lecture hall seat with semi automatic spring assisted retractable and demountable seats made of best quality and strong fabric, comfortable and nylon covered sponge over best quality wooden seat. The armrests on both sides made same material as seat with folding options as shown in the detail drawing. Price includes fixing clips, bolts, nuts and all accessories neccesary to complete the work. Materials and workman ship shall comply with international standards for durability testing EN12727 furniture ranked seating "test methods and requirements for strength and durability" BS 4875-1985 " furniture performance testing " Rating 5, BSEN 13200-4: 2006-Spectator facilities part 5 telescopic stands, BSEN 13200-4: 2006-Spectator facilities part 4 seats- Product characteristics. All seating systems supplied as per the consultant approval and in compliance with local and international standards.