Square prints up to 6" x 6" are developed on Fuji Crystal Archive lustre paper & are single mounted behind a 1.4 mm crisp, smooth white archival board.
Square prints larger than 6" x 6" are developed on Kodak Endura Professional metallic paper & are double mounted behind two sheets of 1.4 mm archival board.
We use "Superclear" as standard; a specialty white water glass from Germany. It is optically coated on both sides to reduce reflections by over 90% & reduce damaging UV light transmission also by over 90%.
Every print is titled on the mount, regardless of size or finish.