Looking to buy Mattress Support

Species: Fir, spruce, pine, alder, birch or any wood
Size: 2000 x 1397 40% of Quantity
2000 x 1197 40% of Quantity
2000 x 997 10% of Quantity
2000 x 897 5% of Quantity
2000 x 797 5% of Quantity
Slat size: 18 x 55 x 1397/1197/997/897/797 mm
Construction: 13 Slats stapled an 2 textile Belt
Distance between Slats 107 mm
Distance of belts from slat ends 50 mm
Belt width about 20 mm
Wood Quality: Grade C , S4S , edges rounded , sound knots max 30 mm
allowed, discoloration allowed, finger jointing allowed,
glue joint allowed, MC max 18% , length tolerance ± 1 mm
Quantity: 2 x40\' Container per month , each about 2800 sets
Drilling  Slats 1-7 and 13 have each 2 through holes dia 4 mm
with a distance of 10 mm from the slat end in the
middle of the slat width.
Packing: Individually in plastic bags, palletized.