Specifications:
DUO/TRIO® beams are made from Scandinavian spruce, known for its superior visual quality and high stability. These beams are available in various dimensions, with widths ranging from 80 mm to 200 mm and thicknesses from 100 mm to 260 mm. They are technically dried to a maximum wood moisture of 15% and are planed on four sides with chamfered edges.

Procedures:
The beams are produced with minimal joins to maintain a solid wood appearance. They are glued using waterproof polyurethane adhesives and are available in lengths from 2.3 m to 16.0 m. Delivery units are wrapped in film for protection.

Standards and Approvals:
The beams comply with DIN 1052-1/A 1, S 10/C 24 standards. An extension of the common approval by the construction inspection (No Z.9.1-440) dated 16th January 2006, includes an increased elasticity modulus from 11,000 N/mm² to 11,600 N/mm², aligning with gluelam class GL 24.

Recommendations:
DUO/TRIO® beams are recommended for applications requiring high form stability and aesthetic appeal without chemical wood preservation. They are suitable for use in application classes I or II, which include interior room climates or external climates under roofing.

Key Features:
- Optical characteristics of solid timber with the bending strength of glued timber.
- Made exclusively from PEFC certified mixed woodlands.
- No chemical treatment required if DIN 68800-2 construction regulations are followed.

Applications:
These beams are ideal for timber building construction due to their form stability and low wood moisture, making them suitable for exposed applications with high aesthetic requirements.