The 3130 Series closer is UL listed- Fire Rated (UL-10C) for up to 3 Hr.
The Door and Frame Manufacturer needs to be contacted to verify their Door/Frame rating would not be ...
The LCN closer fluid "Liquid X" will perform without variation between:
-30° F to +120° F - for manual closers.
+35° F to +120° F - for electrical closers and automatic operators.
At around ...
To correctly answer this question, we need to know how much more force is required to get the door closed. They could try turning the Rod & Shoe over (short side of shoe towards the hinge), or they...
The 4110 Cush closer can be templated for 85°, 90°, 100°, and 110° maximum as standard templates.
The 4110 if ordered by ST-3220 will allow templating to 135°
A 4110 with AVB (advance variable back check) would be recommended. Using a SCUSH (Spring Cush) arm will also help minimize shock to all door hardware.