Please follow these instructions to use The Mulligan®.
Please note, The Mulligan® works well with metal or plastic boxes.
This scenario is of a 4" metal junction box exposed for modification.
1.Test fit The Mulligan® @ the box.
2. If using staples, simply staple in place.

3. If using spray adhesive, trace The Mulligan® for proper aligment.
4. Apply adhesive to both surfaces per manufacturer's instructions.
5. Install The Mulligan®
6. Apply joint compound using the built in mud screed for guidance.
7. Install electrical devices and cover plates after finish has been applied to the drywall.
Note; the devices bear upon The Mulligan® for a bullet proof installation
The cover plates fit perfect evey time.