register installation

[sisyphus]

Hello all, can someone tell me, does the register get connected to the drywall or the ductwork itself? thanks

 

[oldognewtrick]

Give us a little more info, type of duct, type of register, wall or floor mount?

 

[Snoonyb]

The sheetmetal flange on the register box is wide enough to allow the register to be fastened through the sheetmetal.