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Fusible Links
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Style 4 |
 |
Style 8 |
Automatically close fire doors, windows, lids, dampers, vents, and more in the event of a fire. High temperatures melt the solder bond between links, causing them to separate and release their load. Install with S-hooks or chain (not included).
To ensure safety, replace links annually and do not paint or coat them. Use links in straight-pull applications only.
Style 4—Styles 1-5 links are for use on fire doors, windows, and lids.
Style 8—Style 8 links are commonly used on fire doors, smoke and heat vents, and ducts.
Mounting Hole | Overall | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Style | Melting Temp., ° F | Wt. Cap., lb. | Ctr.-to-Ctr. | Dia. | Lg. | Ht. | Certification | Each | ||
| 4 | 165 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 1147A18 | 00000 | |
| 4 | 212 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 1147A19 | 0000 | |
| 4 | 280 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 1147A21 | 0000 | |
| 4 | 360 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 1147A22 | 0000 | |
| 8 | 165 | 5 to 50 | 1" | 1/4" | 1 1/2" | 5/8" | FM Approved, UL Listed | 6501T22 | 00000 | |
| 8 | 212 | 5 to 50 | 1" | 1/4" | 1 1/2" | 5/8" | FM Approved, UL Listed | 6501T23 | 00000 | |
| 8 | 286 | 5 to 50 | 1" | 1/4" | 1 1/2" | 5/8" | FM Approved, UL Listed | 6501T24 | 00000 | |
