This grease exhaust vent system was just cleaned in the past couple weeks in Ohio. These areas in the horizontal were hidden but easily accessible. (These are not close up shots in a hood, they actually are of areas inside an approximately 20" x 30" horizontal duct including looking into the access plate!!) The grease is so rock hard that it cut the inspectors hand when he tried to pass his fist through it. He could not even fit his fist through the grease as the hole for the air was too small. This would have burned for hours if not days!! The company sticker stated clearly that the system was cleaned to NFPA96 and IKECA guidelines. The company is NOT an IKECA member. What do you think?