Intumescent Block - Fire Doors -

Imtumescent Air Transfer Block 

CVE Shop Air Transfer Blocks provide protection against the spread of fire through walls, doors, air ducts and openings in fire-resisting constructions such as partitions and doors and have been specifically developed for installation in particularly aggressive humid environments.

The blocks are made from a rectangular extrusion of uPVC filled with an intumescent core. In the event of fire the effect of heat causes the intumescent core to expand, sealing off the duct or opening against the passage of flames and hot gases.

Correctly installed Air Transfer Blocks may be expected to last the design life of the situation in which they are to be used.

Air Transfer Grilles are designed to fit neatly into rectangular or square ducts and openings and can be made to any required size. The standard thickness is 40mm: rectangular grilles are available as standard in sizes ranging up from 100mm square in 50mm increments on height and length up to 600mm square as a single block.

Features

• Combines air movement with fire protection CVE Shop Air Transfer Blocks provide protection against the spread of fire through walls, doors, air ducts and openings in fire-resisting constructions such as partitions and doors and have been specifically developed for installation in particularly aggressive humid environments
• Provides resistance to fire and smoke up to 60 minutes in doors and walls
• Completely seals in approximately 5 minutes when tested in accordance with BS476: Parts 20/22
• Can be used with a cover grille to ensure a neat appearance and extra privacy
• Allows two directional air flow
• Simple to install
• No maintenance required

Options and Accessories

• Flush Mounting Cover Grilles are available to suit your product.

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