Senior adds two ASSA ABLOY lock options to SPD150 commercial door

Senior Architectural Systems has introduced two lock options for its SPD150 aluminium commercial door, both built on ASSA ABLOY hardware and tested to PAS 24:2022+A1:2024, the company said on 15 October.

Senior said the lock options follow ASSA ABLOY's acquisition of the company, which took place in March 2025, and build on the SPD150 door, which it introduced in the same year. It described the work as part of an ongoing collaboration between the two brands.

The first option, the SPDVL locking system, integrates ASSA ABLOY's ES8100 V-Lock into the SPD150 to give a concealed access control solution. Senior said the system sits entirely within the door and frame, is dual-action and non-rebated, and suits both single and double doors.

Because the lock is housed within the door and frame, Senior said it does not reduce the clear opening width, which it described as helping accessibility and compliance in high-traffic buildings.

The hardware

According to ASSA ABLOY's product page, the ES8100 V-lock uses a high-torque motorised bolt that moves into a V-shaped strike plate, pulling the door into alignment as it locks. The lock can be mortice mounted and concealed, or surface mounted with an optional kit.

The second option, the SPDML locking system, is for outward-opening single SPD150 doors and uses ASSA ABLOY's 281 Series Direct Pull Electromagnetic Lock. Two magnetic locks sit within a dual maglock slam post, which Senior said is compatible with all its standard thermal framing mullions, reducing the need for bespoke detailing across multiple door sets.

ASSA ABLOY says the 281 Series has a 510kg holding force and suits aluminium, timber and steel doors. It has no moving mechanical parts, which the manufacturer says limits wear, and it integrates with card readers, keypads and intercoms.

Installation details

To maintain the maglocks' holding force, Senior said it can supply handed mounting plates with guidance on choosing the correct version for the door handing on each project.

The slam post extends across the internal door stile and partially obstructs the standard push location, so Senior has also introduced a SPWMF18 push plate to give a clear surface for opening the door. It can be supplied in any colour.

The SPD150 door

Senior describes the SPD150 as a thermally broken polyamide door system that accepts glazing up to 48mm thick. It is tested to PAS 24 for security and to BS 6375 parts 1 and 2 for weather tightness, operating forces and cyclic performance.

The company quotes U-values for the door as low as the following:

Glazing	U-value, as low as (W/m²K)
Double glazed	1.6
Triple glazed	1.3

At the door's launch, Senior said its low threshold gave easier access for wheelchair users and positioned the product for sectors including healthcare and education.

Background

Senior was founded in 1991 by the late Lennart Jonsson, according to a statement from the Jonsson family issued when ASSA ABLOY acquired 100% of the company's shares. Senior said at the time that it was business as usual, with no substantial changes planned.

Marking its 35th anniversary in July 2026, Senior said the March 2025 deal had begun a new phase of growth. Mark Wadsworth, managing director of Senior Architectural Systems, said the company's focus was on supporting customers with more sustainable products.

Senior said integrating ASSA ABLOY's locking systems directly into the SPD150 and its wider facade interfaces expands the capability of its commercial door range. Both new lock options are tested to PAS 24:2022+A1:2024.