ST70 Parallel Vent

The versatility of the locking mechanism used in the ST70 system allows the designers to incorporate extra-large sashes into the fenestration or facade.

The ST70 parallel vent provides efficient natural ventilation to your building. The rate of air exchange can be controlled through its variable opening widths.

Providing an elegant visual effect, this system does not take up any room inside.

The ST70 parallel vent with its glazing variation of 28-42 mm provides suitable panel infill room required to suit your projects’ thermal and acoustic requirements.

For more information regarding any of our window systems, you can get in touch with our team here.

  • Includes multipoint locking for added security
  • Excellent thermal performance
  • Eco-friendly polyamide core
  • Glazing variants are 28mm-42mm in diameter
  • Identical sight lines throughout
  • Can be pre-assembled in-house saving installation time/cost
  • Available in dual colour or anodized finish
  • Matching rebate doors available
  • Fully tested to current BS/EN standards within a UKAS approved facility

Frame Depth70mm
EN ISO 1077-1Uw Whole window value: *1.6 W/m²K or less
BS 6375-1:2009Air:Class 4
BS 6375-1:2009Water:Class E1200
BS 6375-1:2009Wind:Class A5
BS 6375-2:2009Operating forces:Class 1
BS 6375-2:2009Mechanical strength:Class 3
BS 6375-2:2009Repeated opening & closing:Class 3 (Heavy Duty: 30,000)
PAS 24:2012Security classification:Certisecure

*Whole window U values are a combination of the frame and glazing thermal performance and as such will vary with the specification of glass utilised. Please consult with the APA technical team for more specific performance information.

Related Systems

st70 casement window

ST70 Casement

st70 tilt & turn window

ST70 Tilt & Turn