A hard plastic firewall to fit 32.1 mm outside diameter F5J electric glider fuselages. This is usually also the spinner diameter. Motor/gearbox mounting holes have been pre-drilled for the Reisenauer Micro-Edition gearbox with 3 holes on a 14 mm circle. This is also suitable for some Maxon 4.4:1 gearboxes.
Note the 31.1 mm dimension on these firewalls is the fuselage front 
inside diameter i.e. the outside size less 2*fuse wall thickness
| Reisenauer 32.1 mm Plastic Firewall Specifications | 
| Fuselage outside/spinner diameter | 
32.1 mm | 
| Fuselage inside diameter | 
31.1 mm | 
| Predrilled holes | 
3 holes on a 14 mm circle | 
| Weight | 
2.1 g |