Using OPT's TRIAD Ultra Quad-Band Filter Under Extreme …
Specs & Price. The 2" TRIAD Ultra Quad-Band filter we will be trying tonight is 3mm thick. It is snugged into a 7mm tall ring that is between 1.3 and 2.58mm thick depending on the production batch. Instead of confusing you with a huge paragraph and seven graphs about all the specifications of the Triad Ultra filter, let's just try to …