Side pop-out frame aluminium Split Bus -07/67Side pop out frame aluminium Because the original steel frames are very susceptible to rust, we also have this aluminium variant in our range. The advantage is that these do not rust and that you can not only spray them in the desired colour, but also polish them for a luxurious look. This is just the divisible frame, with the screws to close it and the bracket for the pop out latch. What you still need are the seals (BBT 7415, 7416 and 7420), the