Kit (Flat Wall)
From Unofficial Stationeers Wiki
The Wall Kit only builds the frame, you need a Steel Sheet to complete the wall. It is not airtight until completed. The properties and behavior are like Composite Walls. However, they offer six different looks.
Bellow are all the variations. There is no mistake on the Small Panel Two Tones and Small Panels Mono Chrome : the textures seems to be inverted (as of version 0.2.1774.8154) The Two Tones is identical to the Monochrome if painted black or white (default).
The arrow always stay red, but it is not the same as the spray can so it will stay slightly visible.