8
Latch Name
Key
Lockable?
Target Width Between
Mounting Points
Gravity Latch
No
1"
Safetech Cobra Latch*
Yes
3/4"
Safetech Pool Latch
Yes
3/4"
Locinox w/ Ext Kit
Yes
1/2"
Figure 4 - Latch Width Table
Figure 5 - Locinox / Safetech Cobra / Gravity Latch / Safetech Pool Latch
•
Now that you have all of your width measurements (gate, hinges, latch), we are going to add all of those
together plus the width of
ONE
post to get the ‘on-center’ post measurement:
Gate Width + Hinge Width + Latch Width + 1 Post Width = Gate On-Center
•
Using that equation, let’s calculate the gate post ‘on-center’ measurement for the following situation:
o
48” Wide Single Gate (one leaf)
o
3” for 5.5” J-Bolt Hinge
o
1” for Gravity Latch
o
2” Posts Being Used
48” Gate + 3” Hinge + 1” Latch + 2” Post = 54” On-Center for Gate Posts
•
If you were installing a double walk gate or double driveway gate (two leafs make up the total width) then
you would need to use the double gate hinge measurement in the table since you will have two sets of
hinges instead of one. Let’s look at that same equation with a double gate:
o
10ft (120”) Arched Double Driveway Gate (two 5’ leafs)
o
8” for 7” J-Bolt Hinges (4” each side of the gate)
o
1” for Gravity Latch
o
4” Posts Being Used
