https://www.amazon.com/gp/product/B08G82HSTD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
If you order the two or just 1, either way it's the way to go. They come with FEP already (so basically 2 FEP sheets included) and are 10x cheaper to replace the FEP moving forward (instead of the plastic vat/fep sheets you need to replace for the stock vat)
Personally, I would abandon it all together though.
You can buy 2 of these for the same price (they include a pre-installed FEP), and can then replace them with literally any fep like normal moving forward instead of the silly frame thing. This also lets you use nfep next time!
The Anycubic vat (and thus the 'easy to replace FEP') are notoriously terrible. Even if you successfully replace the FEP frame, there are stories of warping etc. I highly suggest you invest in Solov vats (https://www.amazon.com/dp/B08G82HSTD?ref=nb_sb_ss_w_as-ypp-ro-model_ypp_ro_model_k0_1_5&amp=undefined&crid=1EVTN3VVHUASY&sprefix=sovol&th=1)
They're nice and sturdy, come with a FEP sheet pre-installed (~15 each for the Anycubic ones, so only 5 dollars more per vat), and you can actually replace them as you normally would (including with fancy nFEP!)
Happy it's working better! If the FEP is damaged, for SURE replace it. I suggest upgrading your vat while you're at it with the Sovol (https://www.amazon.com/dp/B08G82HSTD?ref=nb_sb_ss_w_as-ypp-ro-model_ypp_ro_model_k0_1_15&amp=undefined&crid=48FLOWJJC1TN&sprefix=sovol%2Bresin%2Bvat&th=1)
These vats include some nice covers for storing resin you aren't using and the FEP isn't as miserable to replace as the Anycubic ones.
I bought these for my anycubic mono…. Check this out! https://www.amazon.com/dp/B08G82HSTD?_encoding=UTF8&psc=1&ref_=cm_sw_r_ud_dp_Z8DCJ8ACWNV7HGS53D29
About the same price as two from anycubic and you can change the fep on these.
https://www.amazon.com/dp/B08G82HSTD?ref=ppx_pop_mob_ap_share
I bought these a bit ago, and they fit the Mono well.
Below is a YouTube that said the Sovol Resin Vats work with the Mono, I just ordered my Mono Yesterday and got the 2 pack of pfte vats, so I will find out once everything gets here.
Also a few Amazon review said it worked great with their mono.
https://www.youtube.com/watch?v=FXOh0UnmXE0
https://www.amazon.com/gp/product/B08G82HSTD/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&th=1