could SAV61-1BP be a replacement for 20L06-2-1AA ?

The SAV61-1BP could be indeed a replacement.   20L06-2-1AA Is a weld-on narrow width latch. This latch is a regular version (no lift spring is installed) Furthermore 20L06-2-1AA is  made of drawhook in steel zinc plated and base in steel oil coated. Here is the drawing:   If you would replace this with SAV61-1BP, you’re taking a stainless steel version of this latch. You might consider to use the version in steel zinc plated SAV61-1AF too. Please verify the dimensions on both drawings.  Furthermore, investigate if you can rivet or screw-mount the latch. You can contact us to request a quote, please tell us the quantity. please use also strike S113