Door drop seal Athmer Stadi M-17/17 WS, silicone

The Athmer Stadi M‑17/17 WS is a robust, compact and highly effective drop seal for internal and external doors made of wood, metal or plastic. With its self‑extinguishing silicone sealing profile, parallel lowering and automatic height compensation it provides excellent sound insulation up to 52 dB as well as reliable smoke, fire and draught protection. The WS fixing (angle screws) allows secure installation from below, ideal for both new builds and retrofitting.

Technical data

• Article number: 1‑937
• Seal width / height: 17 mm × 17 mm
• Sealing profile material: silicone, self‑extinguishing (grey)
• Housing material: aluminium, surface mill‑finished/anodised
• Activation: one‑sided, sliding trigger (clip‑on)
• Sealing stroke: max. 13 mm
• Sound insulation value: up to 52–54 dB (depending on floor gap)
• Floor clearance: up to max. 16 mm
• Lengths: 750 / 900 / 1050 / 1200 mm
• Can be shortened: up to 150 mm (from standard lengths)
• Min. / Max. length: 250–2000 mm
• Mounting: WS angle screws, insert into groove + screw from below
• Tests / certificates: Sound insulation ✔, Smoke protection ✔, Fire protection ✔, Accessibility ✔, Durability: 1 million cycles ✔, UL / EPD / REACH ✔

Application & benefits

• High sound insulation up to 52 dB – ideal for acoustic doors
• Suitable for internal and external doors
• Smoke and fire protection thanks to silicone profile
• Parallel lowering for even sealing without offset
• Automatic level and height compensation
• Very durable & maintenance‑free (1 million operating cycles)
• Easy installation, also for retrofitting
• Compact design – suitable for narrow groove dimensions

Further information

The Athmer Stadi M‑17/17 WS is optimised for demanding door systems and, thanks to its parallel lowering, provides an especially neat and low‑wear seal. The sliding trigger enables precise, one‑sided activation of the seal, while the self‑extinguishing silicone lip provides excellent protection against draughts, noise and smoke. This drop seal is also suitable for accessible doors and fire doors according to EN standards.

Scope of delivery

• Athmer Stadi M‑17/17 WS drop seal
• Fixing angle (WS) + angle screws
• Stainless steel pressure plate
• Accessory kit type 5104 (depending on length)

Maximum sound protection, reliable sealing and highly robust mechanics – the Stadi M‑17/17 WS is the ideal choice for demanding door systems.