Internal & heritage

W20

The most slender profile. Solid hot-rolled steel sections with a stepped-leg design and material up to 5mm thick — where sightlines must all but disappear, on internal screens, heritage retrofits and mild-climate openings.

Tagline The slimmest. Single-glazed.

Best for Heritage, internal partitions, mild climates

Lead time 10–18 weeks

Specification

The fine print.

Profile depthApprox. 22mm sightline

SightlineApprox. 22mm face

GlazingSingle, or double up to 20mm IGU

Glazing — maximumUp to 20mm double glazed unit

U-value1.2 W/m²K (20mm IGU)

Wind loadUp to Class C5 — 2000 Pa

Heritage detailSolid hot-rolled steel, 3–5mm sections, stepped-leg

Max bar length5800mm

SizingTo drawings

Compatible styles

Build it in W20.

Fixed

Windows · Picture window. Maximum glass, no opening sash. 1–3 panes per unit.View →

Casement

Windows · Side-hung opening sash, hinge at jamb. Single or paired.View →

Single Hinged

Doors · One leaf, side-hung. Five style variants — differing pane configurations and lite layouts.View →

French

Doors · A pair of hinged leaves — “dual hinged”. Four style variants from full-glass to multi-lite.View →

Curve

Doors · Single or dual hinged with arched head — what aluminium can’t do. Style variants to drawings.View →

Office Screen

Partitions · Floor-to-ceiling internal divider, single-glazed in W20.View →

Window Wall

Partitions · Multi-bay glazed wall. Mullion grid to drawings.View →

Next step

Configure your W20 and price it.

Choose a style, size, glazing, finish and hardware — made-to-measure in 50mm increments. We respond with itemised pricing, by elevation.

Configure & request a quote → Quick enquiry Back to the range