Throat Calculators
The Throat is the opening between the firebox and cook chamber. Enter the area given by the PitCalc and choose a shape that works best for your build.
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Throat Calculator for Cylindrical Tanks
Use this calculator to lay out the throat opening on a cylindrical tank in combination with a square shaped firebox.
Throat Calculator for Cylindrical tank
Top width of cut-out.
Bottom width of cut-out
Height of cut-out
Calculated Area
Trapezoid Shaped Throat Opening for Cylindrical Tanks
Use this calculator to lay out a trapezoidal shaped throat cut-out in combination with a square shaped firebox.
Trapezoid-shaped Throat Opening
Enter the width of your firebox
Enter the height you want for a grease dam at the bottom of the tank.
Top Length
Bottom Length
Height of cut-out
Throat area of cut-out.
Throat Calculator for Overlapping Cylindrical Tanks
Use this calculator to determine the throat cut-out when using two cylindrical tanks of the same or different diameter. The cut-out width will always be the same for both tanks. Enter the tank's diameter and the throat area from the Pit Calculator.
Throat Calculator for Overlapping Cylindrical Tanks
Overall Height of cut-out
Cut-out Width
Calculated Throat Area
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