The Boss TS5225SA Guide Rail Door Closer is a rack and pinion door closer designed for projects where reliability, clean aesthetics, and fire door compliance are essential. Featuring a slimline semi-radius cover and concealed-style slide arm / guide rail design, it offers a neater, more contemporary appearance than traditional projection arm closers, making it an excellent choice for commercial buildings, apartment schemes, education, healthcare, and other heavy-use environments. It is a variable power size EN 2-4 closer, giving specifiers and installers the flexibility to suit a wide range of internal doors. Suitable for a variety of applications where opening forces applicable to BS8300/Equality Act/Approved Doc ‘M’ are not a requirement
Designed for doors up to 1100mm wide and 80kg, the TS5225SA combines dependable closing performance with practical adjustment on site. It features adjustable sweep speed and adjustable latch speed, allowing the door action to be fine-tuned for smooth and controlled closing. The unit is also non-handed, helping simplify specification and installation, and is suitable for regular figure 1 and push-side figure 61 applications. For additional functionality, an optional hold-open guide rail is available for non-fire-door applications, while a mechanical backstop option can help limit door swing where required.
From a compliance and specification perspective, the Boss TS5225SA is a strong choice for fire door and contract applications. It is CE marked, Certifire approved, and suitable for timber fire doors up to 120 minutes. Its durable construction and 10-year guarantee make it particularly well suited to heavy-use areas where long-term performance matters. For projects that need design flexibility, the TS5225SA is available in a selection of standard finishes, with additional metallic and RAL finishes also offered to help coordinate with wider ironmongery schedules.
Whether you are specifying for a new-build apartment block, an office fit-out, a school, or a fire door upgrade project, the Boss TS5225SA slide arm door closer delivers the balance of controlled closing, reduced visual impact, and tested performance that modern contract projects demand.
Key Features
- Guide rail / slide arm door closer
- Variable power size EN 2-4
- Rack and pinion mechanism
- Suitable for doors up to 1100mm wide
- Suitable for door weights up to 80kg
- Adjustable sweep speed
- Adjustable latch speed
- Non-handed
- Suitable for regular fig 1 and push fig 61 applications
- Optional hold open available for non-fire doors
- Mechanical backstop option
- CE marked
- Certifire approved
- Suitable for timber fire doors up to 120 minutes
- 10-year guarantee
- Slimline semi-radius cover
- Suitable for heavy-use areas
