GLS Is Your Plumbing Solution. From supplying local Birmingham plumbing professionals with all the materials they need, to assisting local homeowners and interior designers in creating their dream home, GLS Supply is here for all your plumbing supply needs. Our Kitchen and Bath Showroom in Birmingham, AL offers kitchen and bath fixtures in Birmingham, AL, for every budget. We have the highest quality freestanding tubs, shower heads, kitchen faucets, bath faucets, sinks, toilets and more. While we accept walk-ins in our showroom, we encourage you to schedule your showroom appointment in advance to ensure we can give you the one-on-one attention you deserve.