Stadium BM418B 5" Anti Draft Black Hole Vent (Brown Cowl)

• BM418B stadium core vent brown outer cowl and white internal grille 5" 71K, complete with anti draught baffle
• 100cm2 squared (removing baffle) adjustable to 70 cm2 squared effective free area (using supplied baffle) for maximum of 21kW input (72,000 Btu/h)
• Rated Input Max 21kW (71,500 Btu/h) With Baffle
• Length: 350mm (14")
• 127mm (5") diameter

BM418B stadium core vent brown outer cowl and white internal grille 5" 71K, complete with anti draught baffle. This anti draught air vent is used for Domestic heating boilers and decorative fuel effect fires. 100cm2 squared (removing baffle) adjustable to 70 cm2 squared effective free area (using supplied baffle) for maximum of 21kW input (72,000 Btu/h). Anti Draft baffle supplied which reduced the 'Effective Free Area'. Takes extension tube BM810 to extend a further 1 metre (supplied seperately). 127mm (5") diameter. Rated Input Max 21kW (71,500 Btu/h) With Baffle. Length: 350mm (14"). Tested and complies with BS5440 Part 2, 2000. TO ENSURE THE VENTILATOR PROVIDES THE CORRECT AMOUNT OF AIR WHEN AN APPLIANCE IS OPERATING IT IS IMPORTANT THAT A SPILLAGE TEST IS CARRIED OUT AS REQUIRED BY THE BRITISH STANDARD AND GAS SAFE GOOD PRACTICE.