A few weeks ago the RX crash box was mentioned by me in A post and I was asked to show photos of one. Many years ago you could buy these as A kit from Tower and they worked out great and were very cheap. Today I make them for almost all the planes I build and they have helped save quite A few RXs for some race planes I have built for club members. Sometimes I add A screw down top to them too but this one is open and held in with velcro and sits in cut out foam with sides added then I epoxy it onto servo rails or stringers.