go smoothly and help the doors operate and adjust easily. The Stanley hardware we used for our project was designed for very large, heavy doors, so spanning a hallway opening with hollow- core doors was no problem. We started the project by noting that a 3'0" x 6' 8" door would work well to keep dogs from invading the no-dog zone of our house. You can use any one or combination of two doors commonly found in interior applications.
There are a few details to note when assembling the hardware for the doors. One is the differ- ence between these two nuts with the same inside diameter and thread pitch/count but different outside dimensions. The larger one goes on last and fits in the channel of the door bracket. Not only is it kept from spinning by the shape of the bracket, the additional surface area of the nut helps carry the weight of the doors.
Note that the hanger (or trolley) has a stamp indicating the bottom. This is important to get the hanger bolt into the proper position.
With the large nut in the chan- nel, the flat areas on the hanger bolt allows the door to be adjust- ed for height and level while hold- ing the weight of the doors.
Notice how the shoulder of the door bracket must be held off the door top enough to allow for adjustment to the hanger bolt, which needs room to extend toward the door.
With the door bracket centered on the door stile and allowing for adjustment, I used a combo square to align it and then marked the carriage-bolt locations.
I drilled through the door for each of the carriage bolts.
I placed each of the carriage bolts and started a nut on the underside before turning the door over to tighten the nuts.
When securing the nuts, be careful not to overtighten, which could dent or even break the face of the hollow-core door.
With the door brackets mounted, I Installed the hanger and cut off the carriage bolts just outside of
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