Specifications:
The document outlines the specifications for ceramic latticework (celosía) produced by Ceràmica Ferrés. The dimensions of the lattice are approximately 9.5 x 19.5 x 7 cm, with a weight of 1.20 kg per unit. Variations in size (2-4mm) and color may occur due to the type of clay or finish used. The ceramic pieces are made from local clays, providing unique properties for extrusion and single firing. The glazed surface offers a glass-like appearance and texture.

Procedures:
Installation guidelines recommend a maximum grid size of 320x320 cm for latticework, with expansion joints between modules. Portland cement mortar or polyurethane adhesives like Sikaflex can be used for bonding. Stainless steel anchors are advised for ventilated or screen wall applications. Structural specialist consultation is recommended.

Standards and Testing:
The document references several UNE-EN ISO standards for testing water absorption, frost resistance, chemical resistance, and abrasion resistance. For example, Terracotta Sunbreaks have a water absorption rate of 10%-13% and comply with frost resistance standards. Glazed ceramics show an average water absorption of 13% and resist frost except for brown and red colors after 100 cycles.

Recommendations:
It is advised to avoid pre-assembly of lattices before delivery to the site due to potential size variations. In damp areas, waterproof joints are necessary to prevent moisture infiltration. Bright colors are not recommended for high-wear areas due to potential scratches. Immediate cleaning of acidic substances is crucial to prevent surface damage.

Limitations:
Ceràmica Ferrés disclaims responsibility for improper installation or maintenance. Customers must ensure product suitability for specific applications. No guarantees are provided for abrasion resistance or material displacement.

Additional Information:
All dimensions are approximate, and slight variations in color and mass are natural. Crazing, or small cracks on the glazed surface, is a natural feature and does not affect quality. Sample variations may occur, and multiple samples are recommended for accurate color assessment.