I've not got a picture, sorry. Basically, they look like a normal maglock, but on the top is what looks like a pair of oversized screw head protruding out. This slots into the mounting plate and the screws on the end are only used to stop it sliding backwards & forwards.
I'm hoping someone can help me out.
I'm trying to track down a model number for a slimline maglock which has the mushroom shaped mounting lugs on the top.
These are the ones where the top plate is fixed to the frame & then the lugs on the maglock slot into the corresponding holes in the plate...