Alderlea Cast Iron Series Home / Our Specialties / Fireplaces / Wood - Free Standing / Alderlea Cast Iron Series T4 Viewing Area Heating Capacity Firebox Capacity Firebox Size: 1.6 cu. ft. Log Length Max. Log Size: 17” Fuel Type Wood Finishes Metallic Black, Sunset Red Enamel, Antique White Enamel, Majolica Enamel T5 Viewing Area Heating Capacity Firebox Capacity Firebox Size: 2.1 cu. ft. Log Length Max. Log Size: 18” Fuel Type Wood Finishes Metallic Black, Sunset Red Enamel, Antique White Enamel, Majolica Enamel T6 Viewing Area Heating Capacity Firebox Capacity Firebox Size: 3.0 cu. ft. Log Length Max. Log Size: 20” Fuel Type Wood Finishes Metallic Black, Sunset Red Enamel, Antique White Enamel, Majolica Enamel