Repair instructions for fiberglass screening in aluminum frames: (1) Place screen material over the frame, extending beyond the screen retainer groove on the top and one side at least 1/2 inch. Hold wire steady and use round edge wheel on installation tool to roll the screen cloth into a U shape in the retainer groove on these two sides. (2) Starting at corner, push the retainer into the channel using the bevel or concave edge wheel on installation tool. Work in one direction, using light, short strokes. Pull screening slightly from the corner you are moving towards making sure the screen mesh lays straight along the channel. (3) With a sharp shop knife, razor blade, or scissors, cut screen mesh to fit remaining two sides as in step one. Insert screen mesh into groove and follow with retainer spline as above. Any wrinkle in screening may be corrected by removing spline in any area, pulling mesh tight, and re-rolling spline. When retainer is snugly in place on all sides, cut off excess screening and spline. Note: Take care not to bow in aluminum frame by over-stretching screen cloth. Repair instructions for aluminum screening in aluminum frames: (1) Lay new screening over the frame, extending beyond screen retainer groove on the top and one side by 1/8 inch to 1/4 inch. Hold wire steady and roll in top edge of screen with round edge wheel of installation tool. Make sure wire is completely conpressed into groove, with no excess extending out of retainer groove. (2) Determine length of screening required, cut to size and repeat step one at bottom edge, to insure neat, even installation at the corners, cut the screening across the outside corner of retainer groove at 45 degrees angle. Now repeat process on both sides. Make sure screening is firmly in position. (3) Starting at a corner, push retainer spline into channel using bevel or concave edge wheel on installation tool. Short even strokes work best. After inserting spline on all four sides, trim off loose wire strands and excess spline. Note: Take care not to bow in aluminum frame by over-stretching screen cloth.