Common materials include durable plastic (e.g., HDPE/polyethylene), metal (steel or galvanized metal), and natural wood.
Common installation types are freestanding designs, pressure‑mounted (no‑drill) setups, and hardware‑mounted installations (including in‑ground options). Some products offer both pressure‑mounted and hardware‑mounted kits.
Many gates include a walk‑through door with latches or locks; some models add a smaller lockable pet door for tiny animals. Latch designs are often described as one‑hand operable or secure locking mechanisms.
Metal playpens are described as all‑weather and treated against rust, often with protective anti‑rust coatings and construction intended to resist bending, breaking, and exposure to sun, rain, snow, and humidity.
Many gates include adjustable widths and expansion options. Example ranges from listings include about 29–36.5 in or 30.5–41 in, and some products explicitly include extension kits or a 4‑inch extension for wider openings.
Assembly varies by model. Many listings state “Adult assembly required” with tools provided, while at least one freestanding wooden gate is described as arriving fully assembled (no assembly required).