Our vents may contain naturally occurring character marks that include knots, minimal sap, mineral streaks, color variations and variations in grain. These unique natural characteristics are normal and are not construed as defects. Natural color variations in raw material will dictate the final shade of the stain. Since every tree provides us with its own unique natural characteristics, vents may vary from samples or pictures shown. Grill Works allows nature to create a customized, unique vent for your home.