Glass-fitting Ventilators

Glass-fitting Ventilators

Looking for a clear window ventilator that fits straight into single- or double-glazed units and isn’t too obtrusive? Our range of tough, plastic Vent-A-Matic glass-fitting ventilators from RW Simon provide continuous ventilation that meets all modern Gas Board regulations. That makes them ideal for use in combustion environments (spaces that house boilers, central heating systems, stoves or open fires) where an uninterrupted supply of fresh air is essential, as well as in rooms that are prone to condensation such as kitchens and bathrooms.

At-a-Glance Comparison

ModelVent Size
Unit Type




Pull Cord
Storm Guard
DGS/PBS200mm diaDouble12-32mm9896mm²162mm dia-IntegratedHermetically sealed units
will fit sliding sash windows
Gas Board
DGS/JG203mm dia with
172mm square louvre
Double12-32mm7796mm²162mm dia-IntegratedHermetically sealed units
square louvered design
Gas Board
106 DGS203mm diaDouble12-32mm6997mm²162mm diaYes-Hermetically sealed units
Kitchens, bathrooms, bedrooms
and average size rooms
Gas Board
106203mm diaSingle4-6mm5897mm²159mm diaYes-Kitchens, bathrooms, bedrooms
and average size rooms
Gas Board
BS 5440-2: 2000