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Magnetic hatches

Submitted by Tim Eng on Tue, 09/10/2019 - 19:20

Is there a rule of thumb for spacing of the magnets in magnetic hatches?  I have 3/4” x 1/8” magnets, the hatch is trapezoid shaped and pretty much flat.   Thanks!


Tim, this will depend a little on how strong the magnets are and how much pull they have when installed which will be effected by the layers of glass on top of them and a few other tings.  I generally go about 3 inches on center.


I generally space mine on about 3 inch centers but it all depends on the strength of the magnet.


I found 1/8 x 1/2 to be weaker than 3/16 x 1/2 so I spaced them about 3.5" apart. If you install the magnets, try to pry the hatches up with your fingers, if you can't, you're good, if you can pull them up, add more magnets.