The UNION RETRO V Size 3-4 Overhead Door Closer offers a 10-year guarantee and adjustable closing and latch actions to suit Sizes 3 to 4. It meets BS EN 1154 standards (Fig 1, 61 & 66) and is fire tested for timber (FD120) and metal (FD240) doors. Designed for both new installations and retrofitting over common UK door closers with identical mounting dimensions, it features reversible handing, concealed fixings, and independent controls for door speed and latching. This non-handed door closer provides reliable, flexible performance while maintaining a traditional aesthetic.