Enter the length and width of the fire place into the calculator to determine the maximum length and width of the vented gas log.

## Vented Gas Log Formula

The following formula is used to calculate the maximum size of a vented gas log.

L = FL – 3

W = FW – 3

• Where L is the length of the gas log (inches)
• W is the width of the gas log (inches)
• FL is the fireplace length (inches)
• FW is the fireplace width (inches)

To calculate the length and width of a vented gas log, subtract 3 inches from both the length and width of the fireplace.

## What is a vented gas log?

Definition:

Vented gas log are natural-looking fake wood logs that go in conventional fireplaces to produce flame and heat.

## How to calculate the size of a vented gas log?

Example Problem:

The following example outlines how to calculate the maximum size of a vented gas log.

First, determine the length of the fireplace. In this case, the fireplace is 30 inches long.

Next, determine the width of the fireplace. For this example, the fireplace has a width of 20 inches.

Finally, calculate the maximum length and width of the log using the formulas above:

L = FL – 3

W = FW – 3

L = 30 – 3

W = 20 – 3

L = 27 inches

W = 17 inches