·
High density
corkboard plate: 900 x 300 x 8 mm fixed on a plywood board.
·
Double
multilaminated plywood board, CDX grade, 12mm and 15mm thick.
·
Rubber
cushion pads (45 Shore A hard), 10 mm thick, fastened on second board.
·
Polyethylene
film.
·
Sanding and
coating. 3 coating finishes: 1 sealer coat, 2 finish water based coats.
(DIN 18032 part II)