MI TOWER STAIRS is an access tower system complying with BS 1139 Part 6, EN 1004:2004 and Work at Height Regulations, with vertical ladder access, designed for a maximum platform loading of 150kg. Platform heights are 2.2m to 4.7m internal and external. Tower designation – EN1004-3-4.7/4.7-D Our priority is to help ensure the safe operation of our products, so please pay particular attention to the safety tips on pages 9 and 10. We want you to enjoy the safe and responsible use of your Mi TOWER STAIRS with the minimum of fuss and this guide is designed to get you up and running as quickly and as safely as possible. We recommend that you read this guide prior to assembling and using MI TOWER STAIRS.