NoMaybe these would be good? https://www.screwfix.com/p/rawlplug...VDLTtCh2qtgZZEAQYAiABEgIC4PD_BwE&gclsrc=aw.ds
Overkill.I checked the screws that are used to secure the other side of the frame that’s going into the house and they are 6mm x 150mm. However that side of the frame is just to retain the door. The other side that I’m doing is where the weight will be and the door will be hung
120mm is the correct length.
Not too short, not too long.