TSS and RVK Photo Product ADSK-Revit DWG 2D DWG 3D SAT STEP IFC2x3- Revit PDF TSS 20 FA TSS 25 L TSS 60 P TSS 101 TSS 102 RVK 60 P RVK 101 RVK 101-30 E20 RVK 101-30 REDiBOX GF 40 GF 100 GF 102 USK 40 USK 100 SEAL 40 SEAL 100 GB TSS 20 FA TEKLA files stairs