Spec sheet
Aluminium sliding door

Panoramic 20 Aluminium Sliding Door

by QFORT for Vitrova

Four-panel aluminium sliding door across the rear of an extension, opening onto a raised terrace and lawn

Panoramic 20 is an aluminium sliding door with a 20 mm interlock: two, three, four or six sashes up to 2,500 × 3,000 mm and 320 kg, with pocket and open-corner versions, and Uw 1.47 W/m²K with 28 mm double glazing at the certified size.

Arrangements: Two, three, four or six sashes, with pocket, open-corner and flush-threshold versions
Interlock: 20 mm where two sashes meet
Largest sash: 2,500 mm wide × 3,000 mm high, up to 320 kg and 6 m²
Overall width: up to 5,000 mm (two sashes), 7,500 mm (three), 10,000 mm (four) and 15,000 mm (six)
Glazing: Double glazed only, in a 28 mm unit
Glass fixing: Each sash is bonded to its glass
Weather performance: Air Class 4; wind Class C5; water Class 7A* / 9A** (test conditions to be confirmed)
Thermal (Uw): 1.47 W/m²K with double glazing, at the certified 4,182 × 2,100 mm size
Security: PAS 24:2016 with the interlock deadbolt option
Frame: Aluminium, 44 mm high and 116 mm deep on two tracks (182 mm on three); profile wall 2 mm (sash) and 1.5 mm (frame)

Size ranges
Item	Width	Height
Each sash, smallest	from 500 mm	from 800 mm
Each sash, largest	up to 2,500 mm	up to 3,000 mm
Two panels, both slide	1,000–5,000 mm	800–3,000 mm
Three panels, triple track	1,500–7,500 mm	800–3,000 mm
Four panels, opens from the centre	2,000–10,000 mm	800–3,000 mm
Six panels, triple track	3,000–15,000 mm	800–3,000 mm

Each sash is limited to 320 kg, 6 m², and a height not more than three times its width. Glass can reach the weight limit first, so Vitrova checks every sash against the glass chosen.

Tested performance and security
Test	Result
Air permeability (EN 12207)	Class 4
Wind resistance (EN 12210)	Class C5
Watertightness (EN 12208)	Class 7A* / 9A**: the manufacturer prints these classes with conditions we are confirming
Security	PAS 24:2016 with the interlock deadbolt option (Element Materials Technology, February 2024)

Weather results are for the manufacturer's 1,230 × 1,480 mm test door with two moving sashes. Your quotation states which arrangements carry the PAS 24 result.

Frames
Frame	Depth	Height	Arrangements
Two-track	115.8 mm	44 mm	Two and four sashes
Three-track	181.8 mm	44 mm	Three and six sashes

Flush embedded-threshold, pocket and open-corner versions use their own frame sections; your quotation confirms the build-up for the version you choose.

Door U-value (Uw)
Glazing	Ug of the glass	Uw of the door	Certified door size
Double glazed, 28 mm	1.0 W/m²K	1.47 W/m²K	4,182 × 2,100 mm

Calculated by the manufacturer for this size to EN ISO 10077-1 (certificate dated August 2025); the manufacturer's brochure rounds it to 1.4, and Vitrova quotes the certificate figure. Your door's figure depends on its size and glass. Applied Georgian bars add 0.2 W/m²K. Panoramic 20 takes double glazing only.

Cills
Cill	Frame	Depth	Projects beyond the frame	Support under the cill	Overall footprint
180 mm	Two-track	180 mm	57.2 mm	122.8–160 mm deep	173 mm

The support carries the frame at the minimum and stops 10 mm short of the drip at the maximum, so water still clears it. It must be continuous and level. A 250 mm cill is available for three-track frames; your quotation confirms its projection and support. Pocket frames take no cill.

Sightlines and frame
Where	Size
Interlock, where two sashes meet	20 mm
Frame at head and sill, height	44 mm

The manufacturer has not dimensioned the sash rails or the side jambs, so your quotation confirms them.

Section drawing: cill 180 mm, double track — Cill 180 mm, double track

Section drawing: head and sill section, 2 sashes — Head and sill section, 2 sashes

Section drawing: head and sill section, 2 sashes, flush threshold — Head and sill section, 2 sashes, flush threshold

Glass

Double glazed, clear toughened safety glass, low-E, argon filled, 28 mm (standard)
Double glazed, obscure toughened glass
Double glazed, laminated inner pane for added security
Double glazed, solar control glass

Vitrova warranty
Part	Years
Frame and sashes	10
Sealed glass units	5
Hardware	1

Valid once the order is paid in full. Full terms are in the Vitrova terms of sale.

Sizes, glass and performance for your project are confirmed line by line in your Vitrova quotation. Figures from the manufacturer's technical datasheet, rev 26.08.2026.