LV74F – Rytons 6×6 Louvre Ventilator with Flyscreen

General Details

LV74F – Rytons 6×6 Louvre Ventilator with Flyscreen

  • Plastic louvre grille with detachable flyscreen.
  • Suitable for internal and external use.
  • Low profile fixed open louvres allow a high air flow.
  • Flyscreen helps prevent the ingress of insects and spiders as well as reducing light and draughts.
  • Embossed with DO NOT BLOCK.
  • U.V. stabilised to slow down the effects of sunlight.
  • Use Rytons 6×6 Louvre Backplate with 97mm Dia. Spigot LV4BACKWH to connect to 100mm dia. ducting.
  • Use Rytons 6×6 Louvre Backplate with 122mm Dia. Spigot LV5BACKWH to connect to 125mm dia. ducting.
  • Must not be used to supply combustion air to boilers, stoves and fires.
  • PLEASE NOTE: This item is a plastic component and therefore not suitable for use within the external walls of high-rise buildings requiring non-combustible materials, i.e. those 18m high or more complying to Regulation 7(2) and Approved Document B, and those 11m high or more complying to 2.7 of Building (Scotland) technical handbook 2019.  For compliant alternatives, which includes our tailor-made design service, see Rytons A1 Fire-rated Ventilation Range.

Free Area:

  • 6,423mm² (64.23cm²) per unit.


  • 166mm L x 160mm H (see image gallery above).
  • CAD drawing available by email.


  • White: LV74FWH (bagged LV74FWHBG).
  • Terracotta: LV74FTC (bagged LV74FTCBG).
  • Buff/Sand: LV74FBS (bagged LV74FBSBG).
  • Brown: LV74FDB (bagged LV74FDBBG).
  • Black: LV74FBL (bagged LV74FBLBG).
  • White flyscreen.


  • U.V. stabilised high impact polystyrene.


  • Position over opening and fasten into place.

Handling Information:

  • Box quantity: 25 number.
  • Box weight: 2kg.