NBS Source
Conservation Cowled Vent Grilles
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Application

  • Used as an exterior vent to extract damp and moist air from inside a building.
  • For bathrooms, cloakrooms, tumble dryer outlets, kitchens and all outlets and inlets where either 4 inch (103 mm) ducting or 5 inch (125 mm) ducting is used in listed buildings, restored/ conserved apartments, care homes, manor houses and farmhouses.

Description

Cast iron conservation cowled vent grilles that deflects extracted air downwards and is screwed into the wall through 5 mm diameter countersunk screw holes in the lugs on each corner. The spigot at the back is designed to fit into a core drilled hole.


Features and benefits:

  • Helps to provide natural ventilation in buildings.
  • Manufactured in the UK.
  • Can be supplied in bespoke finishes to match existing brickwork.
  • Fire and UV resistance.
  • Fully recyclable.
  • Minimal maintenance required.

General information

Color

RAL colours available

Black

Standard

Red

Natural

Finish

Bare metal

Will rust to leave a natural brown coating of iron oxide, which will protect the grille from further corrosion.

Red oxide primer

For application of own finish.

Gloss

Two-part epoxy black gloss top coat.

Material

Cast iron

Uniclass 2015

Pr_70_65_04_03 Air grillesPrimary

CAWS

F30/15 Air bricks in external walling

F30/160 Air bricks in external walling

F30/165 Gratings/ ventilators in internal walling

Specification data - Air grilles Enhanced data

Duty

-

Air volume

4000 mm².

Size

133 x 104 mm.

Position

Wall.

Material

Cast iron.

Finish

Bare metal.

Red oxide primer.

Two-part epoxy black gloss top coat.

Accessories

Not required.

Mesh.

Round disc of mesh to attached to end of spigot to prevent ingress of flies and insects.

Flap.

Plastic round duct with flap to prevent back draught.

Weight

0.9 kg.

Spigot diameter (external)

No Spigot. Hole size : 73 mm.

Spigot length

No Spigot.

-

Environmental information

Country of product manufacture

United Kingdom

Recyclability

100%

Literature

Cast Iron Conservation Cowled Vent

Cast Iron Conservation Cowled Vent

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