Saltfire Peanut 3 Marine Tall - 4.7kw Defra Wood Burning Stove. ThisSaltfire Peanut 3 Marine Tall is an DEFRA Approved Wood Burning Stove. DEFRA Exempt for Smokeless Zones. Defra ApprovedYes. This compact stove fits perfect for small spaces including a chimney opening of less than 16” wide.