Internal Metal Grilles

Metal internal grille and louvre vents designed to cover the inner opening of a cavity sleeve and provide an aesthetically pleasing appearance while sustaining airflow and reducing drafts.

Metal Internal Grilles are manufactured from high quality pressed aluminium and available in three finishes: Plain Aluminium, Brass Anodised, and Polished Brass.

Use:

  • To cover the inner opening on the cavity sleeve and provide an aesthetically acceptable appearance, while still maintaining a free flow of air

Product Information

Internal Metal Grilles

DescriptionColourFixing hole dimensionsOverall dimensionsEquivalent AreaProduct Code
9 x 3 hit & miss ventPlain aluminium230mm x 77mm242mm x 89mm3741mm²1220A
9 x 3 hit & miss ventBrass anodised230mm x 77mm242mm x 89mm3741mm²1220BA
9 x 3 hit & miss ventPolished brass230mm x 77mm242mm x 89mm3741mm²1220PB
9 x 6 hit & miss ventPlain aluminium230mm x 153mm242mm x 165mm6452mm²1221A
9 x 6 hit & miss ventBrass anodised230mm x 153mm242mm x 165mm6452mm²1221BA
9 x 6 hit & miss ventPolished brass230mm x 153mm242mm x 165mm6452mm²1221PB
9 x 9 hit & miss ventPlain aluminium230mm x 230mm242mm x 242mm11250mm²1222A
9 x 9 hit & miss ventBrass anodised230mm x 230mm242mm x 242mm11250mm²1222BA
9 x 9 hit & miss ventPolished brass230mm x 230mm242mm x 242mm11250mm²1222PB
9 x 3 louvre ventPlain aluminium230mm x 77mm242mm x 89mm3973mm²1223A
9 x 3 louvre ventBrass anodised230mm x 77mm242mm x 89mm3973mm²1223bA
9 x 3 louvre ventPolished brass230mm x 77mm242mm x 89mm3973mm²1223PB
9 x 6 louvre ventPlain aluminium230mm x 153mm242mm x 165mm7946mm²1224A
9 x 6 louvre ventBrass anodised230mm x 153mm242mm x 165mm7946mm²1224BA
9 x 6 louvre ventPolished brass230mm x 153mm242mm x 165mm7946mm²1224PB
9 x 9 louvre ventPlain aluminium230mm x 230mm242mm x 242mm12770mm²1225A
9 x 9 louvre ventBrass anodised230mm x 230mm242mm x 242mm12770mm²1225BA
9 x 9 louvre ventPolished brass230mm x 230mm242mm x 242mm12770mm²1225PB
25.2 x 2 return air grillePlain aluminium636mm x 48mm648mm x 60mm9774mm²1226A
25.2 x 2 return air grilleBrass anodised636mm x 48mm648mm x 60mm9774mm²122B6A

  • Aesthetically pleasing 
  • Simple screw fixing 
  • Excellent airflow properties 
  • Durable and totally resistant to decay
  • Satisfies all NHBC requirements 
  • Manufactured to BS EN ISO 9001 and BS EN ISO 14001 
  • Complies with all relevant Building Regulations 
  • Meets all relevant British Standards
  • Manufactured in high quality pressed aluminium.
  • Grilles are available in three types of finish: plain aluminium, brass anodised, and polished brass.

Timloc offer a complete range of high quality plastic grilles which cover the internal opening of the cavity sleeve and provide a neat appearance.

Louvre grilles
A permanently open vent with no flyscreen or closing method but with visible airflow marking to comply with the requirements of BS5440 Part 2 2009 : BS EN 13141-1 : 2004.

Louvre grilles with flyscreen
A permanently open vent with a fixed flyscreen but no airflow indication.

Adjustable (hit and miss) grilles
Can be open or closed with an integral flyscreen but no airflow indication.

  • Internal grilles should be positioned over the internal opening of the cavity sleeve and fixed to the wall using screws and wall plugs.
  • External cowls are positioned over the face of the airbrick and fixed to the wall using screws and wall plugs. The opening of the cowl should face down towards the ground.
  • Never block or restrict the flow of air through these ventilators. The louvre grilles have no insect screen fitted – in order to comply with British Gas requirements.
  • Use open louvre grilles when ventilating a gas or heat producing appliance – never use hit & miss grilles in such situations.
  • State the grille or cowl size, and whether louvre, flyscreen or hit & miss grilles are required.

U90 General Ventilation – Domestic 

INTERNAL WALL VENTILATION 

  • Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. Tel: 01405 765567, Web: www.timloc.co.uk 
  • Reference: Reference: Plastic & Metal wall grilles 1200 range
  • Use: To cover the inner opening on the cavity sleeve and provide an aesthetically acceptable appearance, while still maintaining a free flow of air
  • Available in a range of airflow sizes with both colour and finish options

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