Specification: 2022 Eco Design Ready: Yes-DEFRA. Approved: Yes. Type: Multifuel Stove. Fuel: Wood and smokeless fuel (can't burn coal). Material: Cast Iron door and steel body. Heat output: 5KW-Efficiency: 76.9% (When Burning Wood). Efficiency Grade: A. Maximum CO emissions: 0.10%. Primary air, secondary air and tertiary air system. External air compatible: Yes. Flue collar included: Yes. Overall Size: 593*425*337mm. Flue collar: 125mm/5"diameter. Item weight: 58kg. Note: The flue pipe is not included.