Help with screen door roller assembly

Hello!

Thank you for reaching out to us. If your specifications match up with our 84-016 you should be good to go! The open circle is another old design that the manufacturers that make these rollers no longer use. The newly enclosed circle design snaps onto the door corner, rather than hooking onto it as your original roller does. The new style can be a bit trickier to install but is less likely to accidentally detach from the corner.