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70mm_OrigFlushSash
Standard + EnergyPlus outer

70mm Flush Sash Window

The design of flush sash windows takes inspiration from traditional timber joinery, allowing the sash to sit flush in the frame. They are ideal for homeowners looking to bring a traditional charm to their home.

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Liniar flush sash windows

designed from scratch

The original, 70mm range of 

casement windows highlights another industry-first for Liniar in the UK. Recognising the need for a more traditional style of window, Liniar created its 70mm flush sash window system from scratch.

stylish 

Sleek and flush, with no tell-tale uPVC overlap, Liniar 70mm flush sash windows offer all the benefits of uPVC's thermal efficiency, combined with the beautiful appearance of timber.

Liniar flush sash windows
Liniar flush sash windows

thermally efficient

Many property owners require the look of a traditional timber window frame, sometimes due to planning or environmental restrictions. Liniar flush sash windows include Liniar's patented bubble gasket for the ultimate in weather performance, and can even be mechanically jointed for a truly authentic timber appearance.

A+ energy ratings and U-values as low as 1.2 W/m2k, for year-round comfort and reduced energy bills.

CUSTOMISE YOUR FLUSH SASH WINDOW
Available Colours
9162D7A1-7B47-4581-9B0A-4AE2C604D808Exterior
9162D7A1-7B47-4581-9B0A-4AE2C604D808Interior
White
RAL 9003
Available in
S
SCULPTURED
chamfered
White
White
Cream
Irish Oak
Golden Oak
Rosewood
7016 Grey
Black Brown
Chartwell Green
Gale Grey Finesse
Agate Grey
Zoom in
086893B1-1E55-41C0-BD9C-46BA6CDD2C43
70mm Original Flush Sash Catalogue White Exterior

This product is available in more colours for bespoke orders. See the full colour range here.

Technical information

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619E3D06-F09C-40F6-B917-F7383D1418E5
Material
PVCu
1B1D40E1-1C48-4A2C-928C-185D9C44145F
Styling
Sculptured
259BC305-9CAC-4A82-B307-5DEBB1470364
Frame Depth
70mm
Profile
Profile
Standard with EnergyPlus outer frame
7A92A4EA-2AC1-46E5-A6FC-2D05048B5E4E
Glazing
28mm IGU
894B6FFF-425C-4A6B-8FD7-7B708DC6921B
Lowest U-Value
1.2 W/m²K (Whole window)
EAB63F1A-8E5C-4736-907B-69FB8B586F7C
Best Acoustic Rating
35 (-1;-4)
E2A03DE8-F5CC-4E82-8886-34B2E1D7B78B
Highest Energy Rating
A+
2A2D6E87-4676-4E05-AC96-8E42947F4F73
Patented Bubble Gasket
Yes
Recycled material
Contains Recycled Material
No
ED81E880-F76F-4CFA-AB10-4FC758ED9229
Fully Recyclable
Yes

your windows, your way

Liniar understands that every homeowner has unique requirements. That's why our 70mm Flush Sash Windows offer a wide range of customisation options.

With a variety of finishes available, including classic white, authentic woodgrain effects, and contemporary colours, you can tailor your windows to match your individual taste and complement your home's existing features. Experience a personalised window solution that truly reflects your style.

70mm Flush Sash Window FAQs

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Product information

Accreditations
SBD

Secured By Design

BSI PAS24 kite mark

PAS24 Security

BSI EN 6375

BS EN 6375

BS EN 12608

BS EN 12608