Vent Terminal Clearances

A= Clearance above grade, verandah, porch, deck,

or [balcony (*12 inches (30cm) minimum]

B= Clearance to window or door that may be opened

	[*12 inches (30cm) minimum]
C= Clearance to permanently closed window
	[minimum 12 inches (30cm) recommended
to	prevent condensation on window]
D= Vertical clearance to ventilated soffit located
	above the terminal within a horizontal
	distance of 2 feet (60cm) from the center-
line	of the terminal 24 inches ( 60cm) minimum

E= Clearance to unventilated soffit [18 inches (45cm) minimum]

F= Clearance to outside corner [12 inches minimum] G= Clearance to inside corner [`12 inches minimum]

H= *Not to be installed above a meter/regulator assembly within 3 feet (90cm) horizontally from the center-line of the regulator

I= Clearance to service regulator vent outlet [*6 feet (1.8m) minimum]

J= Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance [12 inches (30cm) minimum]

K= Clearance to a mechanical air supply inlet [*6 feet (1.8m) minimum]

L= *** Clearance above paved side-walk or paved driveway located on public property

[*7 feet (2.1m) minimum]

M= Clearance under verandah, porch, deck, or balcony [*24 inches (60cm) minimum **]

***A vent shall not terminate directly above a sidewalk or paved driveway, which is located between two single family dwellings and serves both dwellings.

**Only permitted if verandah, porch, deck, or balcony, is fully open on a minimum of 2 sides beneath the floor

•As specified in CGA B149 Installation Codes (1991) Note: Local Codes or Regulations may require different clearances