The fireplace, rekindled.
FireRock Systems Outside Air Accessory
For optimal fireplace combustion FireRock suggests the use of an outside air kit. These kits pull air from outside the home to aid in the fire's combustion consumption. This accessory is especially helpful in new construction because today houses are more airtight than ever.

Installation Notes:

Not sure if you need this accessory? Because most states require the use of an outside air kit, be sure to check local building codes before deciding to leave this accessory off.

All FireRock systems can be adjusted to accommodate an outside air kit by cutting a notch in two side blocks, inserting the pipe into the fireplace unit through the notch and sealing the notch with mortar. For detailed instructions see our instruction manual and refer to the air kit's manufacturer installation instructions.

FireRock recommends:
Vestal Outside Air Kits