Family Practice and Urgent Care Family Practice and Urgent Care Humble, TX Horizon C-Series Low Rise Vault Skin System (LRVSSP), 40' Sill Length, 44' Ridge Length, 31' Span. Glazing: 20mm Clear Standing Seam Multiwall Polycarbonate. Finish: Clear Anodize, All Supports by Others. High-Res: 2048 x 1536 Low-Res: 1024 x 768