I emailed "Windtrimmer" about 9 months ago requesting the cost of shipping one to the UK. After several tries and no reply I gave up, even though he was still advertising in Miscellany.

However it did look easy enough to make, perhaps 3 or 4mm acrylic sheet and some velcro?

Now that Nick has one in his possession, perhaps he would be kind enough to take some photos and make measurements?

Cheers
Nigel