You have to pay for it though. $3 for one lowes coupon and $4 for Home Depot. Good thing is, you can always come back and buy more when you need them and the coupon is delivered to your email in just a few minutes.
http://coupons.freeroms.com/lowes_coupon.html
Home Depot coupon link is at bottom of the page.
I have no clue how this website is able to generate numerous good-for-one time-only coupons for lowes and Home Depot. My hubby was skeptical about it but I paid $3 for lowes and it worked! We bought a water heater and saved $60 today.