Richell One-Touch 150 Pet Gate: * Recommended for dogs 8 to 44 lbs. * 1-1/2" space between wood spindles * Wood spindle size is 5/8" * Gate door opening is 23" wide * Step-over bar is 1-5/8" high * Tension-mount design keeps gate permanently in place * Gate door opens in both directions to allow ease of movement; latched gate handle locks/unlocks easily with one hand; rubber stoppers protect wall surfaces; instruction manual included