Lower than 4000

<?php

/* file to get sku, pixel_height, pixel_width under 4000 */

// make sure we don't time out
set_time_limit(0);

// include Mage
require_once 'app/Mage.php';
Mage::app('default');

$pixel_height = 4000;
$pixel_width = 4000;

$dt = time();
//$filename = $dt."_pix_size_export.csv";
$filename = "pix_size_export.csv";
$headers = array('sku', 'pixel_height', 'pixel_width');

// open file for writing
$fp = fopen($filename, 'w');

fputcsv($fp, $headers); // add headers to file

echo "<p>Getting products with pix_height <= ".$pixel_height." and pix_width <= ".$pixel_width."</p>";

$products = Mage::getModel('catalog/product')
    ->getCollection()
    ->addAttributeToFilter('status', 1) //enabled
    ->addAttributeToFilter(array(
        array(
            'attribute' => 'pixel_height',
            'gteq' => $pixel_height
        ),
        array(
            'attribute' => 'pixel_width',
            'gteq' => $pixel_width
        )
    ))
    //->addAttributeToFilter('pixel_height', array('gteq' => $pixel_height))
    //->addAttributeToFilter('pixel_width', array('gteq' => $pixel_width))
    ->addAttributeToSelect('sku')
    ->addAttributeToSelect('pixel_height')
    ->addAttributeToSelect('pixel_width');
    //echo $products->getSelect();
    //exit;

echo "<p>Total Products Found: ".$products->count()."</p>";

echo "<pre>";
foreach($products as $p) {
    $data = array(
        'sku' => $p->getSku(),
        'pixel_height' => $p->getPixelHeight(),
        'pixel_width' => $p->getPixelWidth()
    );
    //print_r($data);
    fputcsv($fp, $data);
}
echo "</pre>";
echo "<p>File created: <a href='".$filename."'>".$filename."</a></p>";
fclose($fp);

?>