Definitions for "J-CHANNEL"
Used for receiving siding on all sides of windows and doors, at rake edges of gables and in other miscellaneous situations. Deeper J-channels are for insulated siding, and narrower J-channels for non-insulated siding.
A manufacturing component of vinyl or aluminum siding systems that has a curved channel into which the planks fit. J-channels are used around windows and doors to make weather-tight seals.
Flashing used to finish a rough metal edge. Usually used around doors, and windows.