Plinth at sill beam — vertical GS MW U panel layout, variant I

Junction function

GS MW U plinth with concealed fixing = premium variant of the vertical plinth. Vs S/CH (p. 16):

• Invisible fastener — hidden inside the joint via PM1 washer.
• OB-09 cover flashing instead of typical OB-08 — geometric difference for U-joint geometry.
• Premium aesthetics — no fastener head visible on the lower façade.

Variant I = projection d=20-60 mm, visually discreet drip edge. Used in car showrooms, offices adjacent to halls, eco-buildings.

Critical installation aspects

• PM1 washer (item 09) — key element of the concealed fixing system; fastened with a screw through the panel joint into the sill beam.
• OB-09 cover flashing — wider than OB-08 (for U-joint geometry); covers the joint of the panel’s lower edge.
• Remaining rules = as in S/CH variant (p. 16): installation foam under the panel, contact with the beam, 30 mm drip on OB-13.

Documentation

Technical Catalogue GS MW S/CH/U (Gór-Stal 2025), page 45 — Plinth, vertical GS MW U layout, variant I. Scale 1:5.

Components in this junction