Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install vertical blinds [title] Screw holes into the valance. [step] The valance is l-shaped so the top surface can be mounted inside the upper frame and the front of the valance will hide the headrail. [substeps] Place the valance on a flat surface with the front of the valance in an upright position.

Ending1: Measure 3 inches (7.6 cm) from each end and position each bracket so the top edge is against the upright valance. Use a pencil to mark the 2 screw holes in each bracket. Ending2: Place a piece of drywall over the upright portion of the valance. Place the free end of the drywall against the top edge of the valance. Ending3: On two 8-foot (2.1 m) valances, you'll need an l-shaped seating thread and a large bolt, fixed on each side of the frame. Clevis should be able to fit a small bolt into both bolts. Ending4: Align the two horizontal holes with a screw, so they line up with each other. Using your hole puncher or bobby pin, make your hole about halfway up the trim.

Answer format: ending1/ending2/ending3/ending4