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

In stock

  • clear
  • clear
  • 203mm dia
  • 203mm dia
  • 7796mm²
Part Number:

RRP: £64.72 +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) Stock Box Qty RRP Trade Price Qty
VMT30528 clear clear 203mm dia 203mm dia 7796mm² 8 4 £64.72 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