This Eurospec Steel Worx Designer Thumbturn & Release is part of the Carlisle Brass Eurospec Range, the Carlisle Brass Steel Worx Range, & the Carlisle Brass Escutcheon Range. Carlisle Brass offer a wide range of contemporary & traditional style door handles & hardware. With a great mix of styles & products, Carlisle Brass are one of the UK&0s leading door hardware suppliers. The UK Construction Products Directive requires that door hardware use on fire doors be safe & durable. This door handle also comes with a 25 year mechanical guarantee. Carlisle Brass have a wide range of different styled door handles & accessories, check out the rest of the range here!