Layout of the all products listing

I use Zen Cart 1.3.0.2-l10n-jp-6,
and I have question about editing layout of the all products listing page index.php?main_page=products_all

Is it possible to hide both left and right sidebar only when on index.php?main_page=products_all? :huh:

I know I can edit tpl_modules_products_all_listing but it only let me edit the listing part and not the whole layout.

Thanks for any help!

"Open your common tpl_main_page and read the instructions for removing elements from specific pages. You may want to caution them about removing the main navigation though ... could be confusing to the customer. a better idea might be to get rid of the right hand column all the time."
by Kim

or read this

https://www.zen-cart.com/tutorials/index.php?article=233

Thanks gaurav10feb, I managed to make it. =)