The is the National Fireplace Institute (NFI) Woodburning review Course. It should be taken in combination with the NFI Core Review to prepare for NFI Woodburning certification. This course is approximately 3 hours long and and includes a 35 question review quiz at the end. It is Course # 6773 approved by NFI for 3 .0 Technical CEU’s and approved by CSIA for 1.5 Technical, 1 Codes & Standards, and 0.5 Health & Safety CEU’s.