We have a door leading from the kitchen to a utility room and thence to the
back garden. It is probably the most used door in the house.
This door is steel framed with individual leaded lights. The problem is
that as cats & dogs return from the garden they batter at the door to be
let in. This has ripped the lead flashings away and the door is now
becoming unsafe.
I'm thinking of removing the lower glazed part (approx. 550 x 1350mm) and
replacing with a single sheet of some clear plastic type material. The
upper glazing is a single sheet of glass of similar dimensions so what I
propose should not be out of character.

I'm thinking of using Makrolon / Lexan (don't know the difference but
suspect Makrolon is a trade name).
Would this be suitable, or can anyone suggest a better alternative?
Thickness would be 10-13mm. Must be clear, *reasonably* unbreakable, and
hopefully scratchproof.
I would intend to fix it by bedding into silicone and c'sunk machine screws
at 100mm centres.
Any ideas or alternatives please? Also any links to suppliers?

Many thanks

Nick.