Where do you buy perforated metal grills (not speaker grills/covers)?

[unclet]

I am thinking I might be able to cover the lower half of my speaker compartment with some perforated metal grill.  Where does someone buy something like this?

Look at the picture below to see the metal grill I am referring to ........  I would need a piece about 33" x 33"

Is this stuff expensive?

[Kangum]

mcmaster-carr has it but it wont let me direct link it.

website is http://www.mcmaster.com/

on the left column under find products put Perforated Sheets

then choose round hole perforated sheet

pricing is right on the website. it varies depending on metal hole size ect.

mcmaster is a great company and carry everything. thier shipping costs are not the greatest but they carry everything under the sun and are reliable.

[Kangum]

if i choose a 0.156 hole diameter for 36" by 40" its $57.57 usd.

im not sure how small you want the holes but the price should be about the same regardless

[TOK]

In my limited experience its expensive! I had to buy a piece and cut it down to make the speaker area cover on my cab. It was 50 dollars for a 3 foot square piece. The amount I needed was about 4" wide by 2 feet long, but I couldn't fine it cheaper or in smaller quantities at the time.