I like knowing this unit carries the Functional Devices, Inc. name, a nice touch overall.
Functional Devices-Rib Esr02p Enclosed Pre-Wired Relay, 20A At 300Vac, Dpdt
You will find that the RIB brand is printed neatly, and that detail helps during replacements or upgrades.
The RIB brand on this relay is clearly marked, and that small touch makes identification quick.
functional devices, inc. is the brand here, which I think adds some peace of mind.