Standard Interior Door Sizes
Interior doors follow standardized dimensions for consistency across residential construction.
| Door Width | Height | Thickness | Rough Opening (W × H) | Common Use |
|---|---|---|---|---|
| 24" | 80" | 1⅜" | 26" × 82½" | Closets, utility rooms |
| 28" | 80" | 1⅜" | 30" × 82½" | Bathrooms, bedrooms |
| 30" | 80" | 1⅜" | 32" × 82½" | Bedrooms (most common) |
| 32" | 80" | 1⅜" | 34" × 82½" | Master bedrooms, ADA |
| 36" | 80" | 1⅜" | 38" × 82½" | Main entries, ADA |
Standard Exterior Door Sizes
Exterior doors are thicker and wider than interior doors for security and weather protection.
| Door Type | Width | Height | Thickness | Rough Opening |
|---|---|---|---|---|
| Single Entry | 36" | 80" | 1¾" | 38" × 82½" |
| Double Entry | 72" (36"+36") | 80" | 1¾" | 74" × 82½" |
| Patio/Deck | 36" | 80" | 1¾" | 38" × 82½" |
| Sliding Patio | 72" (total) | 80" | 1¾" | 73" × 82" |
| French Doors (Pair) | 72" (36"+36") | 80" | 1¾" | 74" × 82½" |
Standard Window Sizes
Window sizes vary by type and application. These are common standard sizes for residential construction.
Double-Hung Windows
The most common residential window type with two vertically sliding sashes.
| Window Size (W × H) | Rough Opening (W × H) | Typical Room |
|---|---|---|
| 24" × 36" | 25½" × 37½" | Bathrooms, small rooms |
| 24" × 48" | 25½" × 49½" | Bathrooms, hallways |
| 30" × 48" | 31½" × 49½" | Bedrooms |
| 30" × 60" | 31½" × 61½" | Living rooms, bedrooms |
| 36" × 48" | 37½" × 49½" | Living rooms |
| 36" × 60" | 37½" × 61½" | Living rooms, dining rooms |
Casement Windows
Side-hinged windows that crank open outward, providing excellent ventilation.
| Window Size (W × H) | Rough Opening (W × H) | Typical Use |
|---|---|---|
| 20" × 36" | 21½" × 37½" | Narrow openings |
| 20" × 48" | 21½" × 49½" | Bathrooms |
| 24" × 48" | 25½" × 49½" | Bedrooms |
| 30" × 48" | 31½" × 49½" | Living areas |
Picture Windows
Large fixed windows that don't open, providing unobstructed views.
| Window Size (W × H) | Rough Opening (W × H) | Typical Use |
|---|---|---|
| 36" × 36" | 37½" × 37½" | Square views |
| 48" × 48" | 49½" × 49½" | Large views |
| 60" × 48" | 61½" × 49½" | Panoramic views |
| 72" × 48" | 73½" × 49½" | Wide panoramic views |
Sliding Windows & Patio Doors
Horizontal sliding units for wide openings and patio access.
Sliding Windows
| Size (W × H) | Rough Opening |
|---|---|
| 36" × 24" | 37½" × 25½" |
| 48" × 36" | 49½" × 37½" |
| 60" × 36" | 61½" × 37½" |
| 72" × 48" | 73½" × 49½" |
Sliding Patio Doors
| Size (W × H) | Rough Opening |
|---|---|
| 6' × 80" | 73" × 82" |
| 8' × 80" | 97" × 82" |
| 9' × 80" | 109" × 82" |
| 12' × 80" | 145" × 82" |
Specialty Window Types
Additional window styles for specific architectural needs and aesthetics.
Bay & Bow Windows
- Bay (3-window): 8'-10' wide × 5'-6' projection
- Bow (4-5 window): 10'-12' wide × 18"-24" projection
- Height: 48"-72" typical
- Angle: 30°, 45°, or 90° (bay)
Awning & Hopper Windows
- Awning: Hinged at top, opens outward
- Hopper: Hinged at bottom, opens inward
- Common sizes: 24"-48" W × 16"-36" H
- Use: Ventilation, basement windows
Skylight Windows
- Fixed: 22½" × 22½" to 48" × 72"
- Vented: 22½" × 34½" to 48" × 48"
- Tubular: 10"-14" diameter
- Mounting: Curb or deck-mounted
Egress Windows (Basement)
- Min. opening: 5.7 sq ft (24" × 36" actual)
- Min. width: 20" clear opening
- Min. height: 24" clear opening
- Max sill height: 44" from floor
Window Placement Guidelines
Proper window placement ensures adequate light, ventilation, and aesthetic balance.
Standard Window Heights
- Sill height from floor:
- Living rooms: 24-36"
- Bedrooms: 36-42"
- Bathrooms: 48-60"
- Kitchen (over counter): 42-44"
- Head height (top of window): 80-84" from floor (aligned with door height)
- Spacing between windows: 4-12" minimum (or multiples of wall stud spacing)
- From corners: 12-24" minimum for proper framing
Rough Opening Calculation
General Formula:
- Width: Window width + 1½" (¾" each side for frame/shims)
- Height: Window height + 1½" (¾" top/bottom for frame/shims)
- Note: Always verify with manufacturer specifications
Glass & Glazing Options
Different glass options affect energy efficiency, safety, and noise reduction.
| Glazing Type | Description | Best For |
|---|---|---|
| Single Pane | One layer of glass | Mild climates, garages, sheds |
| Double Pane (IG) | Two panes with air/argon gap | Most residential applications |
| Triple Pane | Three panes, maximum insulation | Extreme climates, high efficiency |
| Low-E Coating | Metallic coating reduces heat transfer | Energy efficiency, UV protection |
| Tempered Glass | Heat-treated for strength, safety | Doors, near doors, low windows |
| Laminated Glass | Plastic layer between glass sheets | Security, sound reduction, hurricane zones |