Columbia 8" Corner Box INTERNAL CORNER ) to five gallon bucket

) to five gallon bucket of drywall compound

Hard wearing outer shell for protection

Memory-free hinge produces straight corners and perfect angles

Two fixed fan shaped blades

The variable suction control provides maximum airflow and performance

Columbia 8" Corner Box INTERNAL CORNER ) to five gallon bucketThe 8" Throttle Box (Corner Box) is another great product of Columbia that offers years of great performance. All billet construction with a threaded stainless steel ball, this Corner Box looks and operates seamlessly. The Throttle Box allows the corners to be quickly coated with your choice of angle head or applicator head. *Patent Pending FEATURES: Available in 7" and 8" sizes New spring tension allows for 50% easier push Hand made from U. S. billet