Cover Letter For Catalog Request 

Dear

Thank you for your inquiry about our   [equipment]  I am
enclosing our catalog for your review.

We developed     [name of equipment]     to provide
educators with a comprehensive and effective means of
transmitting information and to help modernize educational
methods.  That children are highly receptive and stimulated
to learn through the usage of audio-visual material, is
widely accepted by educators throughout the field.

After you have reviewed our material, we would appreciate
hearing your comments, and we will look forward to answering
any questions you have about our product.

Once again, thank you for your interest in the  [product]

Sincerely,  
[Insert yor name]