... ToughAcrylic products is less than half the density of glass, and similar to that of other plastics. Acrylic ... is 17 times stronger than glass and other commonly used aquarium materials. Acrylic has ... a good impact strength higher than that of glass or polystyrene. acrylic products are durable, break resistant. ... A5, 1/3 A4, 1/2 A4 3 page clear Acrylic menu holder