Specifications:
The document provides detailed specifications for radiators with different models and configurations. It includes measurements in millimeters for height (A), width (B), and interaxis (C). The models are categorized based on the number of elements: 9, 13, 16, and 20 elements, with corresponding model numbers such as FY082045, FY120045, FY150045, and FY180045.

Recommended Resistances:
Each model has recommended resistances for different temperature differences (∆t=50°C and ∆t=30°C) and power outputs ranging from 300W to 1000W. The document also provides the weight in kilograms and capacity in liters for each model.

Installation and Modifications:
The document outlines installation procedures, including the use of a "T" fitting for modifying interaxis. It also describes wall fastening systems, which are white for the "9010" version and chromed for "chrome" and "colors" versions.

Operating Conditions:
The maximum operating temperature is specified as 90°C, and the maximum operating pressure is 400 kPa.

Additional Notes:
For single pipe installations, technical notes are available on specific pages for further consultation. The document also includes a conversion factor for power output from watts to kcal/h.