Woodgrain Decal 1/32 - 1/48 Scale - Fine Aircraft Interior Textures Uschi van der Rosten
The timbers used on the aircraft interiors differ from those used on the exterior. Internally there were't such high requirements on material strength. The table of a radio operator for instance did not have to meet the same requirements as plywood used to cover the airframe or the wings. Given this it's natural that the appearances were also different.
Aircraft Interior decal set contains 5 various textures coming in pale and rich. That totals 10 different textures to play with and almost unlimited variations in application.
The product is recommended for both the 48th and the 32nd scale.