Features:

• Solid Wood Construction
• Easy to set up - operational in minutes
• Free Standing - Very mobile
• Rubber feet protect floors and add stability
• Sliding feet accommodate doorjambs, moulding or other obstructions
• Designed for small breeds, non-jumpers or puppy litters
• Optional extensions add another 22 1/4". No limit to number of extensions that can be added - ideal for spanning across a room or other large open area. 
  

Dimensions:

• 20" Height, 1" Wide
• Fits openings 28" to 51 3/4"
• Bar spacing 2 1/4"
• Optional extension adds 22 1/4"