Deck Rails and baluster spacing

I have built a deck around our above ground pool but am not sure how far apart the rails need to be so a child cannot get his/her head stuck. Can you help me out?

• Design Software
• Deck Plans
• Power Tools
• Railings
• Books
• Magazines
• Lighting
• Outdoor Furniture
• Deck Patio Heaters
• Awnings
• Fire Pits
• Today's Blowout Deals!

• LEARNING CENTER
• Building
  • Building a deck
  • Building Costs
  • Building code info
  • Designing decks
  • Design principles
  • Load Capacity
  • Other deck ideas
  • Product Interviews
• Decks
  • Deck Construction
  • Deck Building Ideas
  • Above Ground Pool Decks
  • Wood Decks
  • Vinyl Decks
  • Hot Tub Decks
  • Rooftop Decks
  • Cedar
  • Redwood
  • Ipe
  • Outdoor Fireplaces
• Benches
  • Deck Benches
  • Bench plans
  • Building benches
  • Built in deck benches
  • Built in patio benches
  • Deck planters
• Railings
  • Railing Info
  • Deck railing designs
  • Deck railing ideas
  • Wood deck railings
  • Wood railing designs for decks
  • Aluminum railing
  • Vinyl railing
  • Post Anchors
• Stairs For Decks
  • Stairs Tips
  • Building stairs
  • Stair stringers

• Building Materials
• Deck Materials
• Composite decking
• Vinyl decking
• Ipe
• Cedar

• Preserving Decks
• Maintenance Tips
• Cleaning wood decks
• Deck stain

• Span Tables
• Joists
• Decking boards
• Beams
• Post Size

• Resources
• Suggested Sites
• More Deck Ideas
• Deck Building Forum