The Briton 2100 Series of door controls provides a multi-level door closing solution to suit all projects, door applications and budgets. Easy to install - featuring unique Accufit installation system. This 2130B.L model has the rounded Briton "L" design cover and is suitable for fire doors for up to 2 hours. Wind through adjustable for power size 2-6 making it suitable for most door applications including doors up to 1400mm wide and 120kg in weight. Adjustable strength backcheck helps to minimise damage to adjacent walls when door is forcibly thrown open. Concealed adjustment to prevent unauthorised adjustment to closer. This Briton door closer is CE marked and Cerifire approved. 10 Year guarantee.t