Spec sheet
Aluminium casement window

Signature Aluminium Casement Window

by QFORT for Vitrova

Wide black aluminium casement window over a kitchen sink, looking out to a garden

Signature Aluminium Casement Window is an outward-opening aluminium casement in two styles, Classic (storm-proof sash, 70 mm frame) and Flush (sash level with the frame, 79 mm frame): side hung, top hung and fixed, with Plus sashes up to 1,750 mm high side hung or 1,800 × 1,800 mm top hung, triple glazed as standard.

Styles: Classic: storm-proof sash on a 70 mm frame. Flush: sash level with the frame, 79 mm frame
Opening types: Side hung, top hung and fixed, in single, double and triple arrangements and with fanlights
Side-hung sash: 350–930 mm wide; up to 1,500 mm high, or 1,750 mm with the Plus sash
Top-hung sash: up to 1,200 × 1,500 mm, or 1,800 × 1,800 mm and 100 kg with the Plus sash
Whole window: up to 6,000 × 3,000 mm
Glass thickness: 24–44 mm, double or triple glazed
Thermal (Uw): 1.04 W/m²K triple glazed, at the certified 1,440 × 1,330 mm size; see the table for double glazing
Weather performance: Air Class 4; water E1200
Acoustic: Rw 33 (−1;−4) dB, double glazed
Security: Tested to PAS 24:2016 (Exova (UK) Ltd, 2018); test details on request

Opening sash sizes
Sash	Width	Height	Max weight
Side hung, Standard	350–930 mm	400–1,500 mm	40 kg
Side hung, Plus	350–930 mm	400–1,750 mm	40 kg
Top hung, Standard	400–1,200 mm	350–1,500 mm	50 kg
Top hung, Plus	400–1,800 mm	350–1,800 mm	100 kg
Whole window or fixed pane	up to 6,000 mm	up to 3,000 mm	—

Sizes are for each opening sash. A sash larger than Standard allows is made as a Plus sash, which has a wider profile; your quote shows which is used.

Tested performance
Test	Result
Air permeability (EN 12207)	Class 4
Watertightness (EN 12208)	E1200
Sound insulation, double glazed	Rw 33 (−1;−4) dB
Security	Tested to PAS 24:2016 by Exova (UK) Ltd, 2018

Ask for the security test details before relying on them for Building Regulations Part Q.

Arrangements (viewed from outside)
Code	Arrangement
FX	Fixed pane
SH-L	Side hung, hinged left
SH-R	Side hung, hinged right
TH	Top hung
SH-L\|FX	2 panes: side hung left, fixed
FX\|SH-R	2 panes: fixed, side hung right
SH-L\|SH-R	2 panes: side hung left and right (French, no centre post)
FX\|FX	2 panes: both fixed
SH-L\|FX\|SH-R	3 panes: side hung left, fixed centre, side hung right
FX\|TH\|FX	3 panes: fixed, top hung centre, fixed
30:TH / 70:FX	Top hung fanlight over fixed pane
30:TH / 70:SH-L	Top hung fanlight over side hung left
30:TH\|TH / 70:FX\|FX	2 top hung fanlights over 2 fixed panes
30:TH\|FX / 70:SH-L\|FX	Fanlights (top hung, fixed) over side hung left and fixed

Fanlight arrangements are shown with the fanlight at 30% of the height; your quote sets the actual split. Other arrangements can be made to order.

Window U-value (Uw) by glazing
Glazing	Ug of the glass	Uw of the window	Certified window size
Triple glazed (standard)	0.5 W/m²K	1.04 W/m²K	1,440 × 1,330 mm
Double glazed	1.0 W/m²K	1.44 W/m²K	1,230 × 1,480 mm

Calculated by the manufacturer for one window size each. Your window's figure depends on its size, arrangement and the glass confirmed in your quotation. Approved Document L (England) sets 1.4 W/m²K for new and replacement windows in existing homes.

Sightlines from outside (frame and sash face you see), mm
Where	Classic	Flush
Jamb, Standard sash	65 mm	79 mm
Jamb, Plus sash	89 mm	103 mm
Head with trickle vent, Standard sash	85 mm	99 mm
Mullion between two sashes	108 mm	118 mm
French casement meeting (no centre post)	108 mm	108 mm

From inside, the frame and sash read 65 mm (Classic) and 79 mm (Flush).

Section drawing: classic: sill with cill — Classic: sill with cill

Section drawing: classic: mullion between two sashes — Classic: mullion between two sashes

Section drawing: flush: sill with cill — Flush: sill with cill

Glass

Triple glazed, low-E, argon filled (standard): Uw 1.04 at the certified size
Double glazed, low-E: Uw 1.44 at the certified size, above the 1.4 Part L figure for existing homes in England
Obscure, laminated and solar control glass (double glazed)

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 28.09.2026.