The Roost Rooftop Support Block measures 20" and includes a 13/16" pre-galvanized strut, designed for secure support of rooftop equipment and systems. This support block is constructed from high-quality materials, ensuring durability and stability in various weather conditions. Its design allows for easy installation and adjustment, making it ideal for HVAC and plumbing applications. The pre-galvanized finish provides additional corrosion resistance, meeting industry standards for safety and performance. Perfect for contractors and engineers, this support block is essential for effective rooftop management.