Eduard plastic model pads are still well known (and available) in the natural plastic color.
This new release represents the new generation of the pre-painted model pads.
PSP - Perforated Steel Plates were used for taxiways, hardstands and runaways surface stabilization at airfields by Allied Air Forces during WWII (and after). Prefabricated steel strips, once joined together, composed a compact strip grid. These PSP strips were often seen at the airfields and bases of RAF and USAAF units in Europe, MTO, CBI, Pacific and several other theatres.
Actual scale pre-painted board model of PSP plates surface can be easily used as a ready-pedestal for airplane models or as a diorama base. Colour finishing of this board retains variety of individual plates, their weathering, also as soil base and vegetation effect.For more see article by Jan Zdiarský in Info Eduard 11/2011.