E-Case A is the smallest enclosure. It is a box section aluminum extrusion to take a 55mm wide circuit board with board lengths 40mm, 80mm or 120mm. It is also available in non-standard lengths. Standard colours are silver anodized or black anodized (which is slightly more expensive). Non-standard anodised finishes are also available. The circuit board can have components 18 or 20mm high (depending on orientation). The top of the box features a shallow (0.5mm) recess between the decorative grooves which will take a label. The dovetails down the sides will take a Linc-lug wall mounting bracket (2 lengths available). There is an optional gasket set to aid waterproofing, and an optional bezel which is black.
Exterior dimensions of the extrusion are 63.5mm x 30mm with a variable length. Generally the order code for the box designates the length of the circuit board to go inside. For example EAS80 is the order code for an extrusion that is approximately 80.5mm long to take an 80mm board.