Flame Control No. 167 overcoat has been tested and rated by the Underwriters' Laboratories, as an overcoat for Flame Control No. 166 Class"A" Fire Retardant "Intumescent" Varnish. ULC Listed Available in Low-Gloss, Semi-Gloss and Hi-Gloss. 600 to 800 square feet per gallon. Clear Hi-Gloss. Flame Control Coatings LLC