lindab | fire dampers Fire damper WKS25 Technical data Mechanism type: WKS25B - Manual WKS25M - Manual with magnet WKS25 VGB/DGB - Belimo motorized version WKS25 VSS/DSS - Siemens motorized version Mechanism type c d e mm mm mm WKS25B 84 88 28 WKS25M 104 151 51 WKS25 VSB/DSB 74 92 164 WKS25 VSS/DSS 78 73 107 Fire resistance classification according to EN 13501-3 Rigid wall EI 120 S (500 Pa) Installation within vertical rigid wall EI 120 S Wall min. thickness 100 mm Wall min. density 550 kg/m 3 Mortar sealing ve (i ↔ o) Wet sealing method a×b min 100×200 max 800×600 Installation within vertical light wall (plasterboard) EI 120 S Wall min. thickness 100 mm Wall rock wool min. density 100 kg/m 3 Plasterboard and rock wool 100 kg/m 3 sealing ve (i ↔ o) Dry sealing method a×b min 100×200 max 800×600 Installation within vertical light wall (gypsum block wall) EI 90 S Wall min. thickness 70 mm Wall min. density 995 kg/m 3 Plaster putty sealing ve (i ↔ o) Wet sealing method - Installation within vertical light wall (gypsum block wall) EI 120 S Wall min. thickness 100 mm Wall min. density 995 kg/m 3 Plaster putty sealing ve (i ↔ o) Wet sealing method a×b min 100×200 max 800×600 Flexible wall EI 90 S (500 Pa) a×b min 100×200 max 800×600 a×b min 100×200 max 800×600 a×b min 100×200 max 800×600 a×b min 100×200 max 800×600 EI 60 S (500 Pa) a×b min 100×200 max 800×600 a×b min 100×200 max 800×600 a×b min 100×200 max 800×600 a×b min 100×200 max 800×600 2 We reserve the right to make changes without prior notice
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