Engel Transit Slide Lok Suits 29 to 40 Litre Engel Chest Fridge Freezer. The easy and simple way to secure your Engel portable fridge-freezer in your vehicle. This mounting bracket/base plate suits 29 Litre to 40 Litre Chest Models, including MT35F-G4P, MT45F-G4P and MR40F-G4 Eclipse (see note below). Please note: If using this slide in conjuction with a MR40F-G4 Eclipse fridge freezer, an additional part is required – Slide Lock Eclipse Adaptor Kit TSLECLKIT (see accessories list). Installation: 1. Simply screw the slide lok (plate) to your vehicle floor. 2. Change the feet on your fridge to the feet supplied with the slide lok. 3. Connect your fridge to the slide lok – this will lock your fridge in securely to your vehicle and prevent it from moving around.