The 5/16" X 1" HD Screen Frame is made of heavier .024 mill thick, roll formed aluminum. It is cambered (slightly bowed) to retain screen tension when installed. See Spline Size Chart Below.
The 5/16 thickness also allows the frame to fit into the tracks on many aluminum windows for a nice integrated look.
The 5/16" X 1" HD Screen Frame is strong enough for Solar Screen Material and holds it shape well.
Frame is Special Cut and Non-Refundable.
Fits our
Solid External,
Internal Plastic or
Internal Metal Corners.
Minimum Order of 10 Pieces of Any Combined Lengths.
<FRAME COLORS><SPLINE SIZE GUIDE>
Conditions of Use 
