WooCommerce wrap product images in the loop (shop/archive pages)

woocommerce-shop-archives.php

<?php

/**
 * Shop/archives: wrap the product image/thumbnail in a div.
 * 
 * The product image itself is hooked in at priority 10 using woocommerce_template_loop_product_thumbnail(),
 * so priority 9 and 11 are used to open and close the div.
 */
add_action( 'woocommerce_before_shop_loop_item_title', function(){
    echo '<div class="imagewrapper">';
}, 9 );
add_action( 'woocommerce_before_shop_loop_item_title', function(){
    echo '</div>';
}, 11 );

Perfect. Just what I needed! Thank you.