Blaze King Ashford 25 The Ashford 25 is a medium sized fireplace insert. At 2.3 cu. ft., the firebox will take up to a 22" log and can deliver warmth for up to 25 hours on low. The Ashford 25 is very clean and efficient and can heat from 400 - 1,600 sq. ft. The door features a large, 24" x 11", wide-screen glass viewing area with a nickel plated and hand made olive-wood door handle. Attention to detail is evident from the layered surround panel to the unique control system that allows you to select the heat you want, and is featured in Metallic Black or Chestnut Wood Enamel.