Complementing our US range, the popular R500 OHC transom closer now comes in a universal ADA1-4 version. Be it for public projects requiring barrier-free entrance according to ADA guidelines, or more heavy duty installation scenarios, this model can fulfil all your needs. Paired with our adjustable heavy duty bottom pivot it can be installed on doors up to 125kg, or up to 150kg when using our fixed heavy duty bottom pivot. Moreover, the R500 1-4 can retrofit the most popular models on the Northern American market such as the RTS88.