SINGES Heavy Duty durable steel frame pet dog gate can defend highly impacted. It Fits 29.5-40.5 in openings. Simple pressure-mounted installation requires no tools, drilling, easy to put the tall baby gate together. No worries forgetting to lock the safety gate, it will close automatically, easy one hand operation. Perfect baby gate for doorways, hallways, bottom of stairs, kitchens, laundry rooms, bedrooms and playrooms.