Automatic door bottom seal Athmer Rainstop L-24/20 WS, silicone

The Athmer Rainstop L‑24/20 WS is a powerful, automatic drop‑down door seal for high‑stress exterior doors. Thanks to automatic height compensation, single‑sided sliding actuation and a self‑extinguishing silicone sealing profile, it offers tested driving‑rain tightness, excellent sound and smoke protection as well as reliable sealing against drafts and moisture. The seal is suitable for inward and outward opening doors made of wood, metal and plastic and can be adjusted without tools.

Technical data

• Item number: 1‑955
• Groove dimension: 24 mm (width) × 20 mm (height) 
• Seal travel: max. 16 mm – for floor gaps up to 16 mm 
• Actuation: single‑sided, with sliding trigger (clip‑on) 
• Housing material: aluminium, silver anodised (C‑0)
• Sealing profile: self‑extinguishing silicone, grey 
• Sound insulation: Up to 51 dB (tested)
• Door material: wood, metal, plastic
• Door types: exterior doors, inward & outward opening
• Standard lengths: 750 / 900 / 1050 / 1200 mm
• Shortenable: up to 150 mm 
• Installation: WS‑angle screw fixing, incl. stainless steel pressure plate
• Certifications: Tested for driving‑rain tightness, sound insulation, smoke & fire protection (EN 1634‑1/‑3), accessible (P1B050), EPD & REACH

Application & benefits

• Ideal for exterior doors with high requirements for wind and rain protection
• Automatic height compensation for uneven floors
• Tool‑free adjustment of the actuator
• High sound insulation up to 51 dB
• Suitable for acoustic doors, smoke & fire protection doors
• Self‑extinguishing silicone – durable & safe
• Easy retrofit thanks to practical WS‑angle mounting
• Suitable for DIN‑left & DIN‑right doors

Further information

The Rainstop L‑24/20 WS was specially developed for exterior doors and is designed for heavy weather exposure. Its automatic height compensation seals floor gaps precisely and prevents drafts as well as moisture ingress. It is certified for accessible applications and can be finely adjusted without tools. The seal is maintenance‑free and tested to EN standards for sound, smoke and fire protection – also ideal for demanding commercial and residential doors.

Scope of delivery

• Athmer Rainstop L‑24/20 WS drop‑down door seal
• Stainless steel pressure plate
• WS‑mounting angle + screws
• Accessory pack Art. 547 (depending on version)

Reliable sealing against wind, rain and noise — the Rainstop L‑24/20 WS protects your exterior door reliably and energy‑efficiently.