ere are the key specifications of Leader`s H20 wooden slab beams:Type of wood: spruce/firWeight: 4.5 kg/mBeam height:200mm,± 2 mmFlange height:40mm,± 0,6 mmFlange width:80mm,+ 0,8 mm/-1,2 mmWeb thickness:27mm,± 1 mmGluing: The adhesive used is melamine resin-based glue of EN 30 type, certified for bonding wooden structural elements.External: Constructed from carefully selected solid fir or spruce, the beams feature an 80 x 40 mm section that is precision-milled and calibrated for seamless assembly, complemented by a core structure.Core: three layers of solid spruce or firSurface: treatment with water repellent paintStandard length:1.95/2.45/2.65/2.90/3.30/3.60/3.90 /4.50/4.90/5.90 mStandard packaging: 50/100 pcs per package