GE 30 Electric Built-In Wall Ovens - Manual (Page 4)

3 PEDESTAL RAIL INSTALLATION (30” DOUBLE OVENS ONLY)
A. Place one pedestal rail on each cabinet runner or centered on opposite side of solid cabinet bottom
flush with side of cabinet opening. Locate each rail so that front of rail is behind front cabinet
opening.
B. Drill pilot holes and attach rails to runner or bottom of cabinet with provided hardware.