fan-of-fans
Go in and ask an employee and then they will get the manager, and then ask the manager. Sometimes the stuff has to be shipped back to the retailer because it is leased equipment and they cannot sell it, but ask them anyway and if they say yes, they should be able to put a claim ticket on it for you so it's not accidentally removed and you can pick it up on the final day before they close for good. Also when they start working actively at tearing the store out, keep checking their dumpster behind the store every week after closing and you can find more stuff as well as long as it isn't locked up.
My Menards store that has been open since 2000 just closed down and moved to a mega store down the road (literally 5 mins away). Before they closed I bought the hardware department desk, a few checkout aisle lights, some display pegboard and hardware, a ton of display light fixtures, and then kept rummaging in the dumpster and the trash bins sitting on the sales floor and claimed other odds and ends and signs for free as they told me they didn't care about it if it was in the trash.
A lot of people collect retail equipment (especially if vintage) and larger retail fixtures sell really fast because they cost a fortune in industrial catalogs, so the sooner you get your foot in the door, the better odds you have at claiming some stuff.
I was also at a Rue clothing store on closing day and they were selling all the mannequins and tables and display stuff. They also had all merchandise up to 80% off maximum. I got a $60 pair of sneakers for $3. lol
But really, probably a week before the final day, you should be able to go in there and you can pick out whatever you see, ask if you can buy it, and they will probably sell it, or if it is still needed, they will make you wait to pick it up after the last day. My Menards would just sell whatever I asked about to me for $5. lol