RW Simon Vent-A-Matic Static In-glass Window Ventilator – model DGS/JG

In stock

  • Clear
  • Clear
  • 203mm dia
  • 203mm dia
  • 7796mm²
  • Glazed-in Vent
Part Number:

RRP: £22.23 +VAT

Trade Price:
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To order a box, please order 4

Code Finish Internal Finish External Vent Size Internal Vent Size External Air Flow Internal (EA) Type Stock Box Qty RRP Trade Price Qty
VMT30528 Clear Clear 203mm dia 203mm dia 7796mm² Glazed-in Vent 10+ 4 £22.23 Apply/​Login
Prices are excluding VAT


This RW Simon clear and robust Vent-A-Matic static in-glass ventilator fits into double glazed units to provide a discrete and effective way of ensuring a steady and persistent flow of fresh air to any room.


  • Provides continuous ventilation and conforms with Gas Board recommendations
  • Fits double glazing units 12-32mm thick
  • Designed for hermetically sealed units so MUST be fitted by the glazing manufacturer unless this is intended as a replacement unit
  • Square louvred internal plate
  • Comes with integrated storm guard to reduce drafts even in exposed settings
  • Fits a 162mm diameter sized hole
  • Achieves airflow performance 7796mm² EA
  • Ensure extra weather sealing and security by applying a little clear sealant to the external glazing ring
  • Quickly and easily fitted in two parts into the glass aperture
  • Manufactured from UV stabilised translucent polystyrene to resist yellowing
  • Produced under ISO 9001 quality systems

Dimensions: (see line drawing)

ModelDim A
Dim B
Dim C
Dim D
Dim E
Hole Dim
Dim G
DGS/JG18.5mm65mm203mm dia172mm172mm dia162mm dia28mm
Box Quantity 0
Part Code VMT30528