5" Core Drill Vents

G901

The Large Backplate 5” Core Drill Vent is designed predominently for use when ventilating a gas appliance, although can be used to supply general through wall ventilation as well.

  • Description & Key Features

    Product Description

    The Manthorpe Large Backplate 5” Core Drill Vent is designed predominently for use when ventilating a gas appliance, although can be used to supply general through wall ventilation as well.

    The kit includes a cowl vent for exterior use, a louvre grille for interior use, a 350mm length of pipe duct two large perimeter backplates colour matched to the louvre and cowl and an optional anti-draught baffle which reduces the airflow and also the feel of a draught through the vent.

    Without the use of the anti-draught baffle, the free area of the vent is 100cm², enough to supply an appliance with a rated input of 27kW or 92,000 Btu/h (in accordance with BS5440 Pt.2:2000). With the anti-draught baffle installed, the effective free area of the vent is reduced to 70cm² (BRE tested) providing enough ventilation for an appliance with an input rating of 21kW or 71,500 Btu/h.

    The vent can easily be fitted in both refurb and new build situations. The large backplate covers any masonry damage caused whilst creating the hole for the pipe whether this be with the use of a 5” (127mm) diameter core drill or by chopping out with a masonry chisel.

    Key Features

    • 10,000mm² of airflow without draught baffle
    • 7,000mm² effective airflow with baffle
    • Ventilate gas appliances
    • 5" diameter core drill hole
    • Large back plate to cover any masonry damage
  • Technical

    Fitting Requirements

    Using a 5" (127mm) core drill and a suitable power drill, cut a hole through the entire thickness of the wall. Feed the pipe through the hole, cut to length where required and insert the baffle is necessary.

    Screw the backplates into the outer wall and inner plasterboard. Align and clip the cowl and louvre grille over the backplates.

    Certifications

    Manthorpe G900 - Airflow Test - Report No 240795.pdf

    Regulations & Standards

    BS 5440-2:2009. Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net. Specification for the installation and maintenance of ventilation provision for gas appliances

  • Specifications

    Size Information

    Can span a 350mm wide cavity wall (including lasonry leaves)

    Passes through a 5" diameter hole.

    Material

    Polypropylene

    Colour

    Cowl; Brown,
    Terracotta and
    White

    Louvre always supplied in white

    Quantity Information

    1 kit per box

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