To complete a full commercial kitchen duct clean access to all areas of the canopy and ducting is necessary, if your ducting has no access panels then it probably hasn’t been cleaned to a sufficient standard for TR19 certification, we are able to fit access panels to square and rounded ducting. The images attached are of a ducting from a school near Hanley that had two different sizes of ducting and access to the top of the ducting was on a pitched roof so access was required using scaffolding, thanks to Stone Scaffolding. All compete and the TR19 certification will be sent out soon.