I think your approach to this business is great.  This is much more enjoyable than wandering around …. ….. looking for someone who knows anything about the products (especially since generally noone is knowledgeable about the products).
Lesa, Los Altos, CA

At PondUSA.com we carry acrylic waterfall weirs from Calais.

Acrylic waterfall weirs may be used in chlorinated water, such as swimming pools and spas.