What is the meaning of Catalogue showroom?

Catalogue showroom usually refers to retail outlets which deal in hard goods like electronics,  jewellery,  houseware etc. They are located next to or in close proximity to their warehouses.

The merchandise is not displayed to save costs instead the customers have to browse a catalogue to place order for any specific item. Latter is then fetched from the warehouse and sold to the customer. The price range is low as only a narrow range of goods is displayed. The location of the showrooms is also in low-cost areas.