The Extended Vise Grip Locks are extended bolt versions of the original locks that came with your package. The Extenders are only necessary if you have thick trim, thick door jambs, and the included vise-grip locks are too short. There are two Lock extender sizes depending on your specific doorway measurements but only one size will work–don’t order the largest thinking it will size down–each extender size only works for those specific measurements. Very very few doorways require the longest (super) lock extenders (6 3/4 to 8 3/4 inches) so make sure you order the one that will work for your doorway–usually the 4 3/4 to 6 3/4 inches lock extender size.
Measure Twice Order Once! (Warning: DO NOT MEASURE FROM ONE TRIM TO THE OTHER TRIM)
You need the regular lock extender only if the measurement from your door jamb (the ridge against which your door closes) to your outer trim is between 4 3/4″ and 6 3/4″ inches (12-17 cm) OR if the measurement is 6 3/4″ to 8 3/4″ inches (17cm – 22cm) for the super long lock extender. Easiest way to measure is to close your door, measure from that point forward to the front trim–that is the number that matters. Extender locks come in sets of two so ordering one of these extender locks in your cart will result in 2 being delivered, one for each side of your Gym1 core doorway unit.
Choose the correct Extender Lock size for your trim thickness from the drop-down menu. Note again that very very few doorway trim situations ever require the super long locks which fit the 6 3/4 to 8 3/4 gap so please measure carefully only from the door jamb to the front of your trim. Front of the trim is opposite the side of your doorway from where your door swings out–so again, just close your door and measure from that point forward to the front of your trim. If you order the super extenders, they cannot size down to fit below 6 3/4 inch length needed.
If you have any doubts, shoot us a quick email to email@example.com and feel free to include pic(s) or a video about your unique doorway so we can diagnose and advise.