Service Opening (4030): 20 1/4″ (w) x 29″ (h)
Rough Opening (4030): 48 3/8″ (w) x 36 3/8″ (h)
Service Opening (3030): 15″ (w) x 29″ (h)
Rough Opening (3030): 36 3/8″ (w) x 36 3/8″ (h)
Self-closing horizontal sliders meet all health code requirements. These self-closing units are mounted flush to the exterior wall. By simply releasing the window after serving the customer, the door panel closes automatically. With an offset in the base and gliding on a top-hung ball bearing system, these sliders are the smoothest windows on the market. All IFSC Models come fully glazed with 5/8″ insulated glass.