The user query appears to be concise keywords: "ua" and "profil0". Based on common Trockenbau terminology, you’re likely asking about UA profiles (Aussteifungsprofile) used in drywall systems, including their purpose, dimensions, and typical use cases (e.g., door frames, reinforced walls, non- load bearing walls, and high-stress areas). If you intended something else, please clarify and I can tailor the response. Direct answer

• What is a UA profile? A UA profile is a reinforced steel profile used in dry construction (Trockenbau) for highly stressed areas such as door openings, special wall assemblies, and as a stronger counterpart to the standard UW profiles. It provides greater rigidity and load-bearing capacity, especially where a door frame or a robust frame is required. Typical cross-sections are C-shaped with wider flanges and a thicker gauge, enabling more robust connection points and stiffer framing. [UA-Profil information and general usage](javascript:void(0))
• Typical dimensions and variants: UA profiles come in multiple widths and heights, commonly in sizes like UA 50 x 40 x 2, UA 75 x 40 x 2, UA 100 x 40 x 2 (numbers denote height x flange width x wall thickness in millimeters, with a standard wall thickness around 0.2 mm for sheet metal in many products). They are available in various lengths, often 2.6 m, 3.0 m, 3.5 m, 4.0 m, etc., to suit different wall heights and door openings. These profiles are manufactured from cold-formed steel and meet relevant DIN standards for internal non-load-bearing or lightly load-bearing walls and door frames. [ UA profile dimensions and standards](javascript:void(0))
• Where to use them:
  • Reinforcing door openings in dry walls to prevent frame sag or movable components from warping.
  • Use in high-stress wall segments or where a rigid frame is needed for architectural features or heavy fixtures.
  • As part of Cubo, systemed wall assemblies, or where an extra-sturdy structural stub is required within a non-load-bearing context. [ UA profile usage](javascript:void(0))
• How to specify and install:
  • Choose the correct UA size for the wall height, door width, and anticipated loads; ensure compatibility with adjacent UW profiles and any door stubs or lintels in the system.
  • Install with appropriate screws, brackets, and joint treatments designed for UA profiles, ensuring proper alignment and plumb throughout the construction sequence.
  • In larger door openings or taller walls, UA profiles may be paired with additional bracing or with specialized door frame components to maintain rigidity. [ UA installation guidance](javascript:void(0))

If you’re looking for specific product recommendations or exact part numbers (e.g., UA 100 x 40 x 2, 125 x 40 x 2, or comparable variants from particular brands) or want a quick comparison between UA and UW profiles for a given application, I can provide precise, brand-specific details and installation tips.