What it is
Aluminium windows
An Imperial window with a concealed sash.
Role in the project
Imperial SU
It belongs to the Imperial family but has its own geometry and design intent.
What to consider
Purpose and limitations
Imperial SU, Genesis SU and Superial SU each have their own construction and technical data.
Imperial family versions
One platform, 65 mm deep, with clearly defined versions
Imperial i+ is the basic window platform. SU changes how visible the sash is and OUT changes the opening direction, while Imperial 800 is the related system door – not a fourth window variant.
01
Technical system name
Standard window variantImperial i+ 65
The basic thermally broken Imperial i+ 65 window, fixed or opening as side-hung, tilt-only or tilt and turn. It is the functional core of the Imperial family, from which the SU, OUT and door variants clearly branch off.
View version02This systemTechnical system name
Concealed sashImperial SU
The Imperial version for a less visible sash and a cleaner exterior line. SU has its own cross-section and is not an aesthetic add-on to the standard Imperial window.
This system03Technical system name
Outward openingImperial OUT
The Imperial version for projects where the sash opens outwards. OUT refers to how it opens and its special geometry, not a higher level of thermal insulation.
View version04Technical system name
System doorsImperial 800
A door variant that technically belongs to the Imperial family. It is shown as a related branch, but it is specified and listed in the aluminium doors category.
View versionProfile section
Imperial SU · Profile section
The cross-section is an illustrative view of the system. Exact dimensions and geometry are confirmed against the approved technical drawing.
Technical overview
Imperial SU concealed sash windows
- Frame/sash depth, verified technical data
- frame 65 mm; sash 68 mm
- Infill, verified technical data
- 4–41 mm
- Uf, subject to the exact configuration
- Imperial SU: down to 1.63; Imperial SU i: down to 1.27 W/m²K, depending on the profile and infill
Key points about the system
The concealed-sash version uses its own profile section; it is not the standard Imperial i+.
Comparable solutions
Aluminium windows
Thermally brokenAluminium windowsSystem profile
Genesis 90
A deep, thermally broken window and door system for projects with high demands on the building envelope.
Why this profileThe premium Genesis choice for thermal insulation
View systemChoose Genesis 90 when the insulation of the building envelope, a low-energy standard and long-term efficiency take priority over the lowest initial cost.
Price level: premium
Thermally brokenAluminium windowsSystem profile
Genesis 75
A versatile window and door platform with a 75 mm system depth, the basis for several distinct variants with different functions.
Why this profileThe best all-round Genesis choice
View systemChoose Genesis 75 when you want a good balance between thermal insulation, system options and cost for contemporary residential and commercial buildings.
Special variantsOutward opening · concealed sash · controlled ventilation · integral blind
Price level: mid-range
Thermally brokenAluminium windows
Genesis OUT
A Genesis 75 variant with sashes that open outwards.
View system
Thermally brokenAluminium windows
Genesis SU
A Genesis 75 window with a concealed sash and more uniform sightlines from the outside.
View systemFrequently asked questions
Before the final specification
What is the Imperial SU system?
An Imperial window with a concealed sash.
What is the Imperial SU system designed for?
It belongs to the Imperial family but has its own geometry and design intent.
What should you consider when choosing the Imperial SU system?
Imperial SU, Genesis SU and Superial SU each have their own construction and technical data.
Is all the technical data the same for every version?
Sizes, glass, hardware, structural calculations, threshold and opening type are confirmed for each individual opening – only then can the system be tailored to your LUMORA project.
LUMORA · PROJECT SPECIFICATION
Send your plans for a precise specification
Sizes, glass, hardware, structural calculations, threshold and opening type are confirmed for each individual opening – only then can the system be tailored to your LUMORA project.