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Slimline vs standard aluminium windows

What are the differences between the Origin aluminium windows?

 Slimline aluminium windows Standard profile 
OW-70YesOW-80Yes
SightlinesUltra-slim sightlines of 65mm from sash to frameSlim sightlines of 91mm from sash to frame
ConfigurationsCasement

Fixed frame
Y

Y
Casement

Fixed frame

Bay window

Gable window

French window
Y

Y

Y

Y

Y
PriceThe more affordable option as less aluminium profile is used Slightly more costly than OW70 but offers a wider variety of configurations, colours and an internal flush casement
Colour-coded gasketsBlack onlyMultiple colours available
Thermal efficiencyDouble glazing = 1.5W/m2K

Triple glazing available within a 28mm glazing unit – up to 1.2W/m2K

Aerogel not available
Y


Y


N
Double glazing = 1.5W/m2K

Triple glazing = 1.1W/m2K

Aerogel = 0.9W/m2K
Y

Y

Y
Flush casementExternal flush casement onlyInternal and external flush casement
Popular Colour coded handlesAnthracite grey

White
Y

Y
Anthracite grey

Slate grey

Black grey

Jet black

Dark metallic

Silver

White
Y

Y

Y

Y

Y

Y

Y
Metallic handle rangeChrome

Satin
Y

Y
Anthracite grey

Slate grey

Black grey

Jet black

Dark metallic

Silver

White
Y

Y

Y

Y

Y

Y

Y
Marine finishNot availableNAvailableY
Maximum size4.8sqm maximumY7sqm maximumY