Fire Rated Cavity Closers

G249F

The Manthorpe G249F Half-Hour Fire Rated Cavity Closer has been designed for use where a fire barrier is required to seal cavities around window and door reveals of a building.

  • Description & Key Features

    Product Description

    The Manthorpe G249F Half-Hour Fire Rated Cavity Closer has been designed for use where a fire barrier is required to seal cavities around window and door reveals of a building.

    The unique compressible clip feature allows the product to compress into the cavity creating a continuous seal to any varying width. The enclosed box design incorporates a fibre insulating core which provides an economical solution to cold bridging as it acts as a thermal cavity closer, as well as a DPC and half-hour fire barrier.

    It is manufactured in white in four sizes which suit cavity widths from 50mm to 130mm. It can easily be installed either in new build or refurbishment situations with no special fixing requirements or tools.

    The Manthorpe G249F Half Hour Fire Rated Cavity Closer has been designed to comply with Building Regulations Part L and Scottish Technical Standards Part D.

    The product is composed of a rigid extruded UPVC section with unique variable clip feature and compressed mineral fire wool insulation.

    Key Features

    • Half hour fire rated
    • Rigid extruded UPVC sections
    • Unique variable clip feature
    • Compressed mineral fibre wool insulation
  • Technical

    Fitting Requirements

    Brick up to sill height, cut and fit the sill closer. Cut the jamb lengths 75mm oversize and trim the flanges back to allow them to overlap the sill closer once fitted.

    Continue to brick up the wall, securing all pieces of the cavity closer by plugging and screwing through the larger flange into the internal leaf.

    Certifications

    Warrington Fire - G249 Cavity Closer - Test Report No. 134212.pdf

    Regulations & Standards

    BS 5250:2011 Control of condensation in buildings.

    Approved Document L1 & L2:
    Conservation of fuel and power.

    NHBC Technical Guidance 6.7:
    Doors, Windows & Glazing

    BRE Digest Report 262: Thermal Insulation: Avoiding Risks.

    BRE Information Paper IP 1/06: Thermal Bridging at Junctions & Openings

  • Specifications

    Size Information

    Length 2.4m

    Cavity width from 50mm to 130mm

    Material

    UPVC

    Colour

    White

    Quantity Information

    3 lengths per pack

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