You will find that Dayton relays fit well in standard panels without needing extra modifications or hassle.
Dayton 5X827N General Purpose Relay 120 VAC 16A 8-Pin Plug-In Control Panel
What stands out about the Allen-Bradley brand is the familiarity across plant floors.
You will find that this unbranded relay is light but sturdy, making it easy to mount without extra brackets.
What stands out about Dayton relays is the friendly price point that doesn't sacrifice how they feel.