Over 20 years and two locations, D-Lab has been there to service my needs from expendables and a couple sheets of gel all the way up to complex systems for corporate events/trade show booths. Don’t know if they still make ‘em, but they also had the most ballin’ NO2 fog systems you’ve ever seen, manufactured upstairs at sister-company Interesting Products. Minus one star for moving from River North to Ickville. Yes, nicer showroom and building not on the verge of collapse, but there’s a reason space is cheaper at Lake/Sacramento. I think they lost some steam not being as accessible to the rejuvinated downtown theater district. But still, good people, good prices, good selection.