Slim Sash Cross Section
Heavy Duty Sash Cross Section
The following profiles are the main profiles that we use as standard.
70mm base width profile used as standard.
Internally beaded squareline sash used as standard.
NB in order for the window to be completely internally beaded all aperatures must either be a sash or dummy sash.
Squareline bead for 28mm units used as standard. Chamfered beads available upon request.
Choice of 85mm Stub cill, 150mm, 180mm or 230mm.
38mm add-on is available.
Trickle vents are normally fitted into the frame.
Where trickle vents are fitted in the frame, an add-on is used.
Option to fit trickle vents into the Heavy Duty Sash.
U Values & Energy Ratings
|Typical Glazing Specification
(To achieve U Value)
(Based upon Glazing Spec)
||4-20-4 Low E + Low Iron + Warm Edge Spacer + Argon Fill
||4-20-4 Low E (1.0) + Low Iron + Warm Edge Spacer + Argon Fill
28mm double glazed units as standard.
24mm - 38mm double or triple gazed units also available
||Max Sash Width (mm)
||Max Sash Height (mm)
||Max Weight per Sash (kg)
|Heavy Duty Sash
Alitherm products are available in a choice of standard or non-standard colours,
including metallic, dual colour and Smart’s unique Sensations range of textured
||Typical Lead Time
|RAL7016 Matt - Anthracite Grey
|RAL9005 Matt - Black
|Standard RAL Colours
Handles available in:
- Satin Silver
Multipoint locking fitted as standard to PAS 24:2016