Manthorpe Alpha GRSV30-25 Roof Slate Vent & Integral Adaptor
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Details
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.
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.
Technical specification
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
Technical
- Airflow: 10,000mm/2
- Size: 600mm x 300mm
- Material: Polypropylene
- Colour: Black
- Minimum Roof Pitch: 15 degrees