The Fusible Link arm is available with the 4010, 4020 and 4110 series closers. They all use the same Fusible Link arm. The UL Listing number is for the Fusible Link arms is R1943.
The 4010 Serie...
There are several door manufacturers that have achieved a 90 minute UL Fire listing as shown.
Von Duprin CVC with Marshfield Wood Door: Von Duprin is pleased to announce that Marshfield ...
Maximum UL Fire Rated door sizes are as follows:
A-Series:
4' 0" X 8' 0" single door
8' 0" X 8' 0” double door or pairs
B-Series
4' 0" X 10' 0" single door
8' 0" X 10' 0” double doo...