Hole" ventilation products offer a solution to some
of the problems associated with conventional through-the-wall
they avoid cold air and draughts passing into the room from
outside. Second, they prevent light passing out of the room
(hence "black hole"). Third, they effectively
cut out traffic or other extraneous noises. Fourth, and
finally, it prevents insects and other small vermin entering
too often occupiers resort to masking out or blanking off
wall ventilators to stop cold air entering during wintertime.
The Black Hole Ventilator will stop wind blasting in, as
its baffled labyrinth slows down air flow and creates internal
vortices thereby reducing draughts to a minimum.
ventilators are easy to fit, but we would strongly advise
that you have a registered Registered Gas Fitter carry
out a spillage test as a matter of good safe practice.
can find a gas fitter near where you live by visiting their
website at www.gassaferegister.co.uk.
are all rated in terms of their ability to allow so-called
"free air" to enter as ventilation to a room.
Sometimes called "the effective Free Area" or
simply "free area" - they all mean the same thing
- this volume of free area is measured in square centimetres
and anti-draught ventilators are measured by the volume
of air that they pass, that is, the "effective free
area", and all ventilators should be marked accordingly
with this rating.
United Kingdom, British Standards regulations require a
ventilation rating of 5 sq.cm (formerly 4.5 sq.cm) for every
kiloWatt above 7 kiloWatts input rating for any room with
a gas or solid fuel appliance. (Please note - "input"
rating - not "output"). Most of our inset gas
fires are rated below 7 kiloWatts Input and technically
require no additional ventialtion - however, you should
be guided by your registered gas fitter as to you specific
shoppers should consult their local or national regulations
which may differ from British Standards.