There's a second Viper Steel tier a notch above the 3200 line: DDR4-3600, again split between two CL grades — 18 and 20 — rather than a single fixed timing.
At 3600 MT/s CL20, this 1×32GB kit sits in a family running from 16GB up to 64GB, the same capacity spread as Patriot's slower Viper Steel line but at the higher clock. Because both CL18 and CL20 versions carry the same 3600 name, confirm the timing printed on the specific listing rather than assuming it matches a different kit at the same capacity.
This is unbuffered UDIMM DDR4 for standard desktop boards, not for systems needing registered or ECC modules.