Technical Specifications:
The document provides specifications for various bathroom fixtures including wall-hung and back-to-wall basins, WCs, and bidets. The dimensions and configurations for each product are detailed.

Wall-Hung Basins:
- Art. 456: 110x50.5 cm, available with 1 or 3 holes for faucets.
- Art. 455: 61x50.5 cm, available with 1 or 3 holes for faucets.

Wall-Hung WC and Bidet:
- Art. 453: Wall-hung WC, dimensions 54x37.8 cm.
- Art. 454/1: Wall-hung bidet with a single hole for a faucet, dimensions 54x37.8 cm.

Back to Wall WC and Bidet:
- Art. 450-S: Back to wall WC with "S" trap, dimensions 54x37.8 cm.
- Art. 450-P: Back to wall WC with "P" trap, dimensions 54x37.8 cm.
- Art. 452/1: Back to wall bidet with 1 hole for a faucet.
- Art. 452/3: Back to wall bidet with 3 holes for faucets.

Summary:
The document outlines the dimensions and faucet configurations for a range of bathroom fixtures, focusing on wall-hung and back-to-wall installations. Each product is identified by an article number and specific measurements, catering to different installation preferences and plumbing requirements.