Specifications:
The document details various types of stainless steel mesh, specifically made from AISI 304 stainless steel. The types include N 17, S 17 Spianata, N 220, and S 220 Spianata. Each type has specific dimensions and characteristics.

Mesh Types and Dimensions:
- Type N 17: Thickness of 1.5 mm, with dimensions 43 x 10 mm, and a theoretical weight of 2.5 kg/m².
- Type S 17 Spianata: Similar to N 17 but with a slightly different weight of 2.5 kg/m².
- Type N 220: Thickness of 2.0 mm, with dimensions 62.5 x 20 mm, and a theoretical weight of 3.0 kg/m².
- Type S 220 Spianata: Similar to N 220 but with a slightly different weight of 3.0 kg/m².

Key Parameters:
- DL: Long Diagonal
- DCn: Nominal Short Diagonal
- DCr: Real Short Diagonal
- av: Advancement
- sp: Thickness
- LARG - DL: Width parallel to DL
- LUNG - DC: Length parallel to DC

Additional Information:
The weights provided are theoretical and pertain to the AISI 304 stainless steel meshes. The document also includes a legend explaining the terms used for mesh dimensions and sections.