Normal windows have 50 health and no armor
Reinforced windows have 150 health, 80% damage reduction for all thrown and melee attacks, and has a damage threshold of 11, which means it ignores damage less than 11
Having 3 times the health of a normal window, and being able to ignore blows from non-robust weapons seems completely reasonable to me, but the 80% damage reduction from melee weapons is to much. I understand the intention is to make guns and lasers more effective at shattering the window, but taking 5 times as long to destroy a window with a melee weapon vs a ranged weapon of the same force is a little ridiculous.
My proposal is to reduce the melee damage reduction to 20%, all though there is also an argument made to remove it entirely.
Reinforced Plasmaglass can stay OP because its ya' know, plasma, and not just some iron rods, although you may want to remove someone of the melee damage reduction for the sake of consistency.