dcmtwo
02-14-2012, 08:55 PM
I have a mountain home which has no heater outlet in the kitchen and i would like to add one. im looking for a register box for the ceiling that will have to be 6x10 (6x10 finish grill and 6x10 pipe duct with quick 90) the box will be in the ceiling between two floors which have 2x8 (1.5x7.5) ceiling joists so i need to make a quick 90 deg turn and to maxemize the sq.in. duct size most standard 6x10 to 8in round or 6in round wont fit in a 7.5 space and make a 90 deg turn at the same time. short of a custom made box is there any supplers that make a all square 6x10 quick 90 off the shelf? thanks