Sheerline’s slim ‘steel look’ Classic Heritage door is said to be a ‘perfect addition’ to the thermally efficient Classic aluminium window range.

Featuring a signature ‘stepped’ look, the doors feature a unique lockbox design, visible on both the interior and exterior, and are available as either single or French doors.

Designed to suit ultra-modern homes as well as period properties, ultra-slim aluminium doors are reported to be increasingly popular with homeowners.

Classic Heritage doors perfectly match the rest of Sheerline’s stepped range, allowing customers to specify bi-folds and patios alongside either slim Classic or versatile Prestige windows to deliver a high-quality, consistent aesthetic across a project.

Available now, the new doors have sightlines as slim as 60.5mm and are Part L compliant as standard thanks to Sheerline’s proprietary Thermlock technology.

Thermlock uses an integrated multi-chambered system, enabling the company to achieve U-values of 1.4 W/(m²K) when the Classic Heritage door is double glazed, and an A+ Door Energy Rating.

Roger Hartshorn, Sheerline’s CEO, said: “The fact that we have completed the Classic range with our new Classic Heritage door shows how far the Sheerline brand has come in a short space of time.

“It reflects our ability to be versatile and agile, to create design-led products that remain practical, stylish, and sustainable. We go above and beyond what our customers expect of us and continually challenge the aluminium industry so that it is better for all our customers across the UK.”