Raked Ceiling Flange

Ceiling flange's are used to neaten up the cut out and help provide clearance in the ceiling for the flue pipe or ceiling box to pass through. Designed in an elliptical shape to match the outside of a flue passing through a raked ceiling of various angles from 10 degrees up to 30 degrees.
 
Please note the fit may not be perfect due to the design of raked ceilings.