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VENT AND FIREPLACE SIZE
*Flare-RD-45 is shipped with 5x8 vent. All other Flare 45 are shipped with the 4x6 vent
MINIMUM COMBUSTIBLE CLEARANCES FROM VENT
•
HORIZONTAL VENT CLEARANCES:
A minimum clearance of
3 inches
(76mm) to the top and
1 inch
(51mm) to the sides and
bottom of the vent pipe on all horizontal runs to combustibles is required.
•
VERTICAL VENT CLEARANCES:
A minimum of
1 inch
(25mm) all around the vent pipe on all vertical runs to combustibles is
required except for clearances in appliance enclosures.
•
Horizontal vents
have a minimum
1/4 inch
(6mm)
rise per 1 foot
towards the termination.
•
When penetrating through combustible walls and ceilings, frame a minimum of 10.5 in x 10.5 in opening and ensure that
the insulation is kept clear of the vent pipe using either a wall thimble or an attic insulation shield. use the DuraVent
framing cutout dimension table based on your selected part.
Frame cutout table taken from the DuraVent or ICC installation manual
Size
Vent Size
Flare 30
4x6
Flare 45*
5x8 or 4x6 *
Flare 50
5x8
Flare 60
5x8
Flare 70
5x8
Flare 80
5x8
Flare 100
5x8