Family Run Business
Made In Britain
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10 Year Guarantee
Alitherm Plus

Alitherm Plus Aluminium Door

Our contemporary collection of entrance doors is bound to impress your visitors while providing an effective barrier against both the elements and unwelcome trespassers. Our Alitherm Plus doors have been designed for versatile use, functioning as either open out or open in, single or double doors. They can be internally or externally beaded, complete with side-light and low threshold options.

Not only do our elegant Alitherm doors enhance the aesthetics of your home, but their robust and durable construction retains warmth and allows in more light, owing to their slim sightlines. You can rest easy knowing that our multi-point locking system significantly boosts your home’s security, complemented by our adjustable SFS hinges.


Here at Smart Aluminium Windows & Doors, we prioritise specifying top-tier hardware to make our products as simple to install as possible. Consequently, we consistently recommend that a 20mm extension profile be specified on the hinge side of each door. This guarantees that the hinges have ample clearance, whether dealing with plaster lines on the interior or external brickwork.

Key Features of SMART Alitherm Plus Residential Doors:

– 70mm ovolo or square direct fix outer frame

– SFS adjustable hinges that ensure the doors function properly and can be adjusted according to site conditions
– 24mm – 32mm glazing that can incorporate a variety of square, ovolo, or chamfered designs
– Multipoint locking system with lever/lever or lever/pad handles
– High-grade, durable hardware that has been salt tested for longevity
– 13mm low aluminium ramped threshold
– Choice of 85mm Stub cill, 150mm, 190mm or 225mm
– A selection of couplers is available to link the door to a side screen or window, depending on the outer frame’s base width and the side window, as well as the structural demands of the coupler.