Timberwolf TI3TN-1 Wood InsertTransform your masonry fireplace into an efficient, clean burning and cost effective heating source with Timberwolfs TI3TN 1 Wood Burning Insert. The TI3 T insert series will match any dcor whether it be traditional or contemporary. Four stainless steel secondary air tubes supercharge the fuel burning process. A log retainer and a a heat circulating blower, make it a perfect solution for your home or cottage. TI3TN 1 KEY FEATURES 1. 8 cu. ft. firebox