php - Find product by SKU and exclude it -

on our site have text within div shows if product in price range (offering finance) within our code.

now, want exclude 1 individual product showing box it's pre-owned item.

is there way of finding product sku , excluding parameters have?

<div class="v12smallwrapper"> <a onclick="showfinance('',<?php echo $_price?>,'<?php echo $_product->getbrand()?>')"> <?php echo $_freefinance ?> <?php echo $this->__('finance available @ checkout <br />£')?> <?php echo $monthlypayment2499 ?> <?php echo $this->__(' month. ')?> <?php if ($_price <= 2500):?> <?php echo $this->__('buy pay later finance available')?> <?php endif; ?> <?php echo $this->__('click here details*')?> </a> 

i'm not php appreciated.

try this

<?php if($_product->getsku() != 'sku-to-exclude'):       // code display box  <?php endif; ?>