TYPE	CLEARANCE REQ’D	W. PROTECTION SCREEN
Single wall	18 inches	Reduce to 9 inches
Double wall	6 inches
Double wall, ventilated	6 inches
With prefab chimney section	2 inches

Protection
Wall screen for simple wall pipes only – With assembly complete with wall screen, the distance between the pipes and combustible materials (wall, ceiling) can be reduced.

Owners are required to engage the services of a member of the Association des professionnels du chauffage (APC) for the installation of pipes.