I have tested this code and it works as described, apply the code at the checkout of 1800lighting.com and enjoy a $20 discount.
Place all of your items into your cart. Type the promotion code in the bar that says "Promo Code" at checkout. Click "Apply" to get $20 off your order of $100 or more at 1800lighting.com
I am re-activating this expired deal. This coupon is valid and working as described the shop. Select your items, go to the shopping cart, apply the promotional code and get "$20 Off Your Orders Over $100 at 1800lighting.com"