This is a plastic Euro-rack mount made by SKB. It's a 4U rack mount with a convenient handle for easy portability. Dimensions: Width: 49 cm, Height: 18 cm, Depth: 28.5 cm (Please allow for slight variations due to amateur measurement). I used to use it to house a MIDI MOOG, as shown in the image. The lid shape is different on the item being sold; the one in the image was sold with the MIDI MOOG (used as a reference example). The item for sale is shown in the second image and was used for a Studio Electronics SE-1. I no longer use it as I've sold my MIDI MOOG and SE-1, but it's still in good condition and ready for use. I'm hoping to find a new owner. Thank you.