Standard measurements for single hung and double hung windows are typically 24 to 30 inches wide and 48 to 56 inches high, while standard basement windows are typically 18 to 24 inches wide and 12 to 18 inches high. Bay, bow, sliding and picture windows are typically larger than single hung, double hung and basement windows, and their measurements vary. Each window manufacturer has its own standard window sizes. Manufacturers can also customize windows that do not fit standard sizes.
Single and double hung windows have pieces that slide vertically. No part of the window protrudes on the outside of the home. On a single hung window, the top part of the window remains stationary while the bottom moves vertically. On a double hung window, both parts move vertically.
Bay and bow windows give more interior space to a home because they protrude outside. They typically are stationary in the middle with single or double hung windows on the sides. Sliding windows move horizontally along a track, and one window moves in front of another stationary window. Picture windows are typically one of the largest window types. Some styles may be from floor to ceiling, letting in plenty of natural light.