Prima Steel Doorsets Prima Doorsets is the UK's premier high security steel door range developed to support bespoke solutions, primarily within vulnerable locations or high security sectors.The range offers excellent value, good aesthetic appeal and is fully tested and certified to the latest doorset performance standards. Visit ASSA ABLOY Opening Solutions Door Group homepage Security DoorsetsA range of superior design security doorsets manufactured by ASSA ABLOY Security Doors and tested to LPS 1175 Personnel DoorsetsA high aesthetic steel door range, suitable for internal or external applications Acoustic DoorsetsA well design sound reduction doorset, deliver different levels of sound reduction to suit individual room and building requirements. Fire DoorsetsProvide up to 30,60, 240 minutes fire protection, used extensively by the Energy Production, National Infrastructure, Rail and Retail sectors