[Highland Park] Seeking recommendations for iron work/aluminum porch gate

Hello Neighbors, We are opening up a previously closed up porch. There are a great many porches similar to ours in the neighborhood. We have a brick house with a side porch and an arched opening. We need to have a gate installed in the entryway. We went to Home Depot; they know nothing. We would like the dark aluminum with a gate that can be locked. Please send your recommendations! Thank you very much. Joan Soulliere Farragut Street