Adams Rite, part of ASSA ABLOY Security Solutions, an ASSA ABLOY company, has launched a variable spring strength version of its popular ARC-51N transom door closer.

The new unit shares the same footprint as the current fixed spring variant making it an ideal retrofit product. Featuring an adjustable spring, which can be easily changed between EN 1 – 4 to provide a variable closing force, a different L bracket is the only change from the fixed version.

Ideal for refurbishment projects, thanks to its common footprint, the variable speed transom door closer from Adams Rite can be used on a variety of commercial building projects.

The current range offers customers 3 fixed spring versions - light, medium and heavy, matching the closing force requirements in EN1154 for EN2, 3 & 4 respectively.

Lighter than the fixed spring versions, building users will benefit from the reduced effort needed to open the door, and the peace of mind that the door will be controlled and secure upon closing.

Andy Stolworthy, Product Manager for Adams Rite, said: “Adams Rite is at the forefront of understanding the market requirements of hardware for aluminum doors and already supplies a comprehensive door closer range; the introduction of the variable speed transom closer provides another option for our customers.

“Door opening force requirements are a priority for building owners and occupiers; keeping them as low as practically possible while ensuring the door closes to maintain security and heat retention. This unit allows a door to be adjusted to ensure the optimum balance between the two.

“A word of caution, if the doorset is specified to meet the opening force requirements of Approved Document M, a CAM motion unit should be used, which Adams Rite can also supply.”

Available with the full range of accessories, the unit will be initially launched with a standard spindle, longer spindle variations will follow shortly after.

Adams Rite is the leading supplier of aluminium door locking, electric locking and escape devices, supplying the top OEM door manufacturers worldwide. The company is part of ASSA ABLOY Security Solutions, a division of ASSA ABLOY, the global leader in door opening solutions.