Well I called ahead of time thinking the glass guy would be able to save me time and money so I diden't have to waste time. It turned out that after asking him twice on the phone if his glass was 1/4 inch thick he said yes but in person though 1.4mm was the same as 1/4" "oh sorry that is the thickest glass we carry". So while I was in the neighborhood I also stopped by Home Depot, turns out they don't cut glass or Plexiglas at all but sell pre-cut panels and again nothing thicker then 3/32 in glass. Although HD did have per-cut panels 36"X12" which were almost the exact size I needed, the glass was so thin it staged when held on its side.
Sad that I may have to pay $100 plus $30 shipping for a Perfecto glass canopy which is nothing more then four 30"X11" glass panels, I started brain-storming for a solution. Then suddenly it hit me as I remembered the dimensions of the 20 gallon tank I purchased at PetSmart on sale for $20 I was going to use as a sump tank. The glass panels on the 20 tank are 12"X30"X1/4" thick. This means that one tank has three 12"X30" glass panels (2-sides and 1-bottom) and two 12"X12" ends, just what I need. With the 3/4" center-brace so huge on this tank the span between the center-brace and trim is only 28", this leave 2" to spare plenty of footing for the disassembled 30"X12" PetSmart aquarium. I can even use the left over tank frame on the disassembled 20 gallon as guides for the 30" cover panels glued to the center brace. Instead of the conventional 1 plastic guide glued on the center of the center-brace with 4 sets of evenly spaced cover panels, I will make and glue 2 guides on the center brace spaced 22" apart. This will work fine but will also make the glass lids about 1/3 lighter in weight.
Ill have to pick up another 20 gallon for a sump tank at Petco tomorrow where they are still having a $1 a gallon sale, but unlike the PetSmart 20 tanks which are 30LX12H perfect for the canopy glass I need, Petco 20 tanks are 20LX20H the wrong size for my canopy panels but actually better suited as a sump becasue it is taller. Time to started on disassembling a perfectly new $20 twenty gallon tank for my $20 glass canopy lol. Will post pics later