All of the metal frame hardware we offer will fit on all currently manufactured metal frames generically designated as #11 Profile moulding. This includes the metal moulding currently made by Nielsen, Clark, Designer, Alumaframe, Global Art, MCS, Decor and most OEM manufacturers. The #11 Profile category (and compatible profiles) constitute probably 95% of the current metal moulding market.
If you are installing older metal-framed pictures, you should be aware that metal frame moulding design has evolved over the years and this hardware may not fit inside the back channel of certain older, now obsolete style metal frames (typically pre-1980 manufacture).
There are a small number of these older extrusion profiles still being made, the so-called #186 Profile and #444 Profile. These profiles have a narrower back channel, measuring about 1/4" wide, compared to the standard 3/8" wide universal channel of the #11 Profile. Our metal hardware will not fit on #186 or #444 profile moulding.