To properly install the magnet box for your ABH 2300 C28 Surface Mount Magnetic Door Holder, follow these steps outlined in the instruction manual. First, measure the distance from the pivot centerline to the wall (Dim. "A"). Then, determine the door width (Dim. "B"). Next, consult the provided table to find the appropriate magnet box location on the wall based on your "A" and "B" measurements. If your measurements for "A" or "B" fall between the dimensions listed in the table, make the necessary adjustments. Important note: if your "A" and "B" measurements intersect in the shaded area of the table, do not install the magnet box, as proper alignment may not be possible. For the vertical location, the manual suggests placing the magnet box on the top rail, roughly 5" from the top of the door. Check the table for the degree of door opening and coordinate with any door closers and other hardware you have. Also, ensure that the total projection of door hardware does not exceed 3-5/8" on the pull side of the door; if it does, you may need additional extensions (sold separately). From the wall corner, measure the correct "C" dimension, as determined in step 3. Remember to route your electrical wiring before you install the magnet box. Finally, install a 4" x 2-1/8" x 2" outlet box (not included), reinforcing it to withstand a minimum pull of 50 lbs. By carefully following these steps from the ABH 2300 C28 manual, you can ensure your door holder functions correctly.
