DOMETIC Flush Mount Fixing Frame For CRD50/CRX/CRP40/50. The flush fridge frame is a great way to finish off and complete the installation for your Dometic Waeco CRD50, CRP40/50 or CRX50 fridge. The surround allows the fridge to look built in to the units and can be a way of taking up any slack gaps in the units built around your fridge.