Made by STI, I have 60 of these Intumescent Firestop Collars that are brand new and still in original package. I'm asking $12 each or a discount if you purchase all 60.
SpecSeal® Series LCC Collars are used to protect
a variety of plastic pipes including PVC, PVC Foam
Core (ccPVC), CPVC, ABS, and ABS Foam Core
(ccABS) in both vented (DWV) and closed (electrical
conduit and water supply) installations.
SpecSeal® Series LCC Collars are suitable for
use in all common constructions including concrete
floors, concrete over steel deck, concrete walls,
concrete block walls, gypsum board walls, as well
as wood floor assemblies.