Manthorpe Alpha GRSV30-25 Roof Slate Vent & Integral Adaptor

VNTMANSV
£9.95
(£11.94 Incl. VAT)
  • Buy 2 for £9.45
    (£11.34 ) each and save 5%
  • Buy 4 for £8.95
    (£10.74 ) each and save 10%
Availability: In stock
- +

Velux Rewards Autumn 2019 Promotion | About Roofing Supplies

Description

Manthorpe Alpha GRSV30-25 Roof Slate Vent & Integral Adaptor

Manthorpe GRSV30-25 Alpha Slate Vents are an unobtrusive, economical roof ventilator providing 10,000mm/2 of air flow per unit.

The Manthorpe GRSV30-25 Alpha Slate Vent 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.

It can be used for both high and low level roof ventilation requirements.

The Manthorpe Alpha GRSV30-25 Roof Slate Vent has an integral oval outlet which feeds directly into the roof space, or can be used as a spigot for mechanical extraction and soil pipe ventilation in conjunction with the Manthorpe GRPA Flexible Pipe (available separately).

The hood of the Manthorpe GRSV30-25 features a 4mm fly screen to prevent blockage from falling debris and entry of large insects into the roof space.

Technical

Technical

  • Airflow: 10,000mm/2
  • Size: 600mm x 300mm
  • Material: Polypropylene
  • Colour: Black
  • Minimum Roof Pitch: 15 degrees

Certification

  • 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 & a rainfall rate of 200mm/hour

Features

  • 10,000mm/2 of air flow per unit
  • Replaces one existing slate
  • Can be cut down on site to fit
  • Integral cowl with insect grill
  • Integral outlet feeds directly into roof space or can be used as a spigot for mechanical extraction by connecting a Manthorpe GRPA flexipipe (available separately)
  • Extensively independently wind tunnel tested
  • Minimum Roof Pitch: 15 degrees

Fixing

The Manthorpe GRSV30/25 slate vent takes the place of one standard slate.

  • For 500mm x 250mm slates trim slate vent along marked lines.
  • Cut two adjacent slates directly below the slate vent.
  • Cut an inverted “T” in the felt and fold back
  • Fix slate vent into position using holes provided.
  • Secure front of slate using a copper disc rivet.
Write Your Own Review
You're reviewing:Manthorpe Alpha GRSV30-25 Roof Slate Vent & Integral Adaptor
Your Rating