solenoid strength question

i use the door lock ones and put a spring over the rod that goes from the door to the jam you can cut the spring down to size that way you dont have to put in a popper and it looks better.

i ordered SPAL door poppers.. from what i hear they are the best.. and great quality! I actually might install some door lock actuators in the mean time to see what your talking about.. if you never tried it.. how do you know? I will just keep a coat hanger w/ me!