1.4 x 6 inches; firestop tested up to 4 hours per astm e81 (ul 1479) can/ulc 5115; provides draft and cold smoke seal
No other part numbers with same form, fit, and function found.
NSN 4140-01-307-0272
NSN 5835-01-357-9235
NSN 5895-00-847-8935
NSN 5999-01-397-2771
NSN 6240-00-660-8849
NSN 4140-00-853-3889
NSN 4140-01-494-3714
NSN 5945-01-403-2800
NSN 5910-01-534-7699
NSN 5985-00-276-5368
NSN 5975-01-334-7753
NSN 5925-01-201-0098