ERD for Giant P-SLR1 alloy rim help needed

[Tj123]

Hi, my rear 20h rim is almost worn out and looking for a replacement, I will have to re use the spokes as they are the tricon ones and hard to get. I like the hub, giant but with DT Swiss 240 internals so would like to keep if possible

So I am after a replacement rim, but I am unsure of the ERD.

Does anyone know what it is? Or even some possible rim suggestions for this.

[Beaver]

If someone has the possibility to measure the ERD of Giant rims: I would like to know the ERD of SLR-0 42mm rims.