Thousand Oaks no longer have the Type 2+ listed on their web site. I suggest you email them to make sure it is still suitable.
See
http://thousandoaksoptical.com/faqs/
(email address at bottom of page)
Explore Scientific have the Tyoe 2+ listed (may be an old image).
See
https://explorescientificusa.com/pro...for-telescopes
I have a Type 2 from the late 1980s and it has a few pits which can be masked but I no longer use it. The life is typically 15 years but can last longer if properly looked after. I believe there were both visual and photo models. The visual model could also be used for photo but the photo model could not be used for visual as it was unsafe for this purposes it let in more light for shorter exposures.
These filters were made of glass with a nickel chromium allow coating. They produce an orange-yellow Sun image and are known as white light filters. Adding a visual Ha filter will not make them safer. Safe Ha observing is done with a completely different method.
I suggest you contact Thousand Oaks directly for advice.