STAD BM418W core drill vent white outer cowl, white internal grille 5" 71K, complete with anti-draft insert
Used for Domestic heating boilers and decorative fuel effect fires - Vario 100
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-draught baffle supplied which reduced the 'Effective Free Area'.
• Takes extension tube BM810 to extend a further 1 metre.
• 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.