CUT A PIECE OF CARBON TO THE RIGHT SIZE
DRAW ROUND HEATER VENT WITH FEW MM DIFFERANCE
CUT OUT AND STICK TO HEATER VENT LIKE SO
HEAT WITH HEAT GUN OR HAIR DRYER
STICK EDGES DOWN ONCE WARM
AND FIT
VERY SIMPLE GUIDE BUT DOES THE TRICK

HOPE THIS HELPS
VTRowland
tom