Clearance above grade, veranda, porch, desk, or balcony 12” (300 mm) ** 12” (300 mm) *

Clearance to window or door that may be opened 6” (150 mm)

termination within a horizontal distance of 18” (458 mm)

Clearance to unventilated soffit 12” (305 mm)

Clearance to outside corner 5” (127 mm)

Clearance to inside corner 2” (51 mm) minimum 2” (51 mm) minimum

Clearance to nonmechanical air supply inlet to building or

the combustion air inlet to any other fireplace

Clearance to a mechanical air supply inlet 36” (910 mm) above if within 10 ft (3 m) horizontally ** 72” (1830 mm) *

Clearance above paved sidewalk or paved driveway located

Clearance to termination (alcove) 6” (15.2 mm) ** 6” (15.2 mm)*

Width of alcove (minimum) 36” (910 mm) ** 36” (910 mm) *

Clearance to combustible above (alcove) 18” (457 mm) ** 18” (457 mm) *

In accordance with the current CAN/CGA-B149.1 National Gas And Propane Installation Code

In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes

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 veranda, porch, deck, or balcony is fully-open on a minimum two sides beneath the floor