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Manthorpe Refurbishment Slate Vent 600mm x 300mm (10000mm2) - Black

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£9.40 Incl. VAT
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The GRSV30/25R Refurbishment Slate Vent is designed to be retrofitted without the need to cut slate battens. It is manufactured as standard for 600 x 300 slates but can be easily trimmed to fit 500 x 250 slates using the pre-marked cut lines.

The alpha slate vent can be used for both high and low-level roof ventilation requirements.

  • Allows 10000mm2 airflow per vent
  • UV Stabilised Polypropylene
  • The hood of the GRSV30/25 features a 4mm fly screen to prevent blockage from falling debris and entry of large insects into the roof space.

Not suitable for extraction

The GRSV30/25 has been extensively and independently wind tunnel tested to the following standards:-

  • BS 6367 Deluge test 225mm/hour rainfall.
  • Driving rain test down to a roof pitch of 15 degrees with an up roof wind speed of 13m/s.
  • Rainfall rate of 200mm / hour to generate a fine penetrative spray.

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Questions & Answers


Is this suitable for a bathroom extractor fan?


No, this vent is not suitable for extraction.

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Manthorpe Refurbishment Slate Vent 600mm x 300mm (10000mm2) - Black

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