The aga stretton defra approved inset multi fuel stove is the same design as the standard stretton but has past the tests to allow it to be used to burn wood in smoke control zones as well as its striking looks and the great build quality youd expect from an aga stove the stretton has been built and designed the fitting of the stove in mind the stove is easy to install as it can fit into an existing 16 or 18 fireplace opening the flue opening has been fitted 263mm back on the body of the