Prime-Line 5/8 In. x 1/4 In. Gray Plastic Screen Frame Corner (20-Count) PL14335
5/8" x 1/4" plastic square cut frame corner. Eliminates the need for mitering. Use with 5/8" x 1/4" aluminum screen frame. 20 per package. 5/8" x 1/4" screen frame is not available. For new frames, use 3/4" x 1/4" frame and corners.