These are sized by the duct/hole size and have an approximate 1&amp;quot; surrounding border, which adds approximately 2&amp;quot; to the overall width and length.  Louvers/dampers are included with these registers and are easily removed if required.Cast-Aluminum (black) - $40 eachCast-Iron (black) - $58 eachCast-Brass (polished) - $75 eachPlease download our register pricelist for full size and pricelist under the Prima Registers section (&lt;a href=&quot;http://thedoorstore.ca/wp-content/uploads/WEB-REGISTER-PRICELIST-2014.pdf&quot; rel=&quot;nofollow&quot;&gt;thedoorstore.ca/wp-content/uploads/WEB-REGISTER-PRICELIST...&lt;/a&gt;)&lt;a href=&quot;http://www.thedoorstore.ca&quot; rel=&quot;nofollow&quot;&gt;www.thedoorstore.ca&lt;/a&gt;