The thickness of the metal is 1.0mm.
This can be used on a hollow door, but be careful not to overtighten the screws so as not to strip out the thin wood.
Not very easily.
Yes, color matching screws are included
36 inches.....these are not nominal sized they are actual i centered a 34 on a 36 inch door had exactly 1 in on either end
You might need to rough it up and use metal paint
Yes but, others stated that they are wood screws. If you will be mounting on metal door you should replace with either self drilling or regular sheet metal screws OVAL HEAD type to make them neat and not stick out to catch on anything. If for outside mounting without storm door use STAINLESS STEEL SCREWS to stop rusting or coat them with CLEAR NAIL POLISH. Harder than you think acrylic, cheap and easy.
No, but with care this product could be cut to size and filed smooth
#4 self tapping, predrill metal door first 1 size lower