Zenith | Square, Centred, Classic

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A compact square roof lantern that punches well above its size. The Zenith 600 × 600 brings balanced overhead light into bathrooms, en-suites, and utility rooms - with Thermlock® thermal technology and 50mm ultra-slim sightlines delivering a premium look and feel even in the smallest spaces.

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Step up from a flat rooflight to something with real architectural presence. The Zenith 800 × 800 square lantern adds height, dimension, and a centred ridge profile to compact extensions and garden rooms — while Thermlock® technology keeps the thermal performance exceptional.

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The size where a roof lantern starts to genuinely transform a room. The Zenith 1000 × 1000 floods kitchen extensions and dining areas with natural light through its symmetrical glazing bars and ultra-slim 50mm sightlines — creating bright, airy interiors that feel significantly larger than their footprint.

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A generous square roof lantern that brings real scale to single-storey extensions. The Zenith 1200 × 1200 delivers a beautifully balanced overhead feature with its centred ridge design, while Thermlock® thermal technology and 28mm high-performance glazing keep your space warm and your energy bills low.

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Sized for open-plan living, the Zenith 1400 × 1400 square lantern creates a commanding ceiling feature that draws the eye upward and fills the room with natural light. The ultra-low-line external profile keeps the look clean from outside, while 50mm sightlines maximise the glass area from within.

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When you want the lantern to define the room, not just light it. The Zenith 1600 × 1600 is a substantial square format that floods generous extensions and kitchen-diners with daylight — backed by Thermlock® thermal technology for a centre pane U-value of 1.0 W/(m²K).

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A statement square lantern for spaces that demand presence. The Zenith 1800 × 1800 turns a flat roof into a dramatic architectural centrepiece, with symmetrical glazing bars creating perfect visual balance at scale. Built on the Infinity S1 system with the full security and thermal specification.

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Four square metres of overhead sky. The Zenith 2000 × 2000 delivers the kind of natural light that changes how a room feels entirely — making large extensions, orangeries, and open-plan living spaces feel bright, connected, and alive. Thermlock® technology ensures the thermal performance matches the ambition.

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For grand residential spaces where the roof lantern is the single most important design decision. The Zenith 2200 × 2200 creates a breathtaking symmetrical ceiling feature — with ultra-slim 50mm sightlines, Thermlock® thermal technology, and the full Infinity S1 security specification built in as standard.

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The largest square roof lantern in the Apex Collection — and one of the most impressive you can buy. The Zenith 2400 × 2400 delivers nearly six square metres of overhead glass, flooding showpiece living spaces and grand orangeries with natural light. Thermlock® technology, 50mm sightlines, full S1 security.