When furniture will not fit through the door or up the stairs, a window is often the next option - especially in high-rise apartments and older homes with tight access. But not all windows open wide enough for furniture. The type of window, its standard size, and whether the sash can be removed determine whether this route is viable. This guide covers every residential window type and what you can realistically pass through each one.
Quick answer
Standard residential windows are 24–36 in (61–91 cm) wide. Casement windows swing fully open and give the largest usable opening for furniture; double-hung and sliding windows lose about half their frame size when opened normally. Bedroom egress windows must be at least 20 in (51 cm) wide under IRC R310.2 — large enough for many tilted items with the sash removed.
| Window Type | Typical Width | Usable Opening for Furniture |
|---|---|---|
| Casement (crank-out) | 24 - 36 in (61 - 91 cm) | Full frame opens — best type for furniture |
| Double-hung | 24 - 36 in (61 - 91 cm) | Half the height, unless the sash is removed |
| Sliding (horizontal) | 36 - 72 in (91 - 183 cm) | Half the frame width |
| Bedroom egress (minimum) | 20 in (51 cm) wide | IRC R310.2 minimum clear opening |
| Window Type | Typical Width | Typical Height | Usable Opening for Furniture |
|---|---|---|---|
| Single-hung | 24 - 36 inches | 36 - 60 inches | Only bottom sash opens — opening is half the total height (18 - 30 inches) |
| Double-hung | 24 - 36 inches | 36 - 60 inches | Both sashes slide — but opening is still half the height unless a sash is removed |
| Casement (crank-out) | 24 - 36 inches | 36 - 72 inches | Entire sash swings open — full frame opening is usable (best type for furniture) |
| Sliding (horizontal) | 36 - 72 inches | 36 - 60 inches | One panel slides — opening is half the frame width (18 - 36 inches) |
| Bay / bow | 60 - 120 inches total | 36 - 60 inches | Only flanking casements or double-hungs open — center panel is fixed |
| Picture | 24 - 96 inches | 24 - 72 inches | Does not open at all — no usable opening for furniture |
| Awning | 24 - 48 inches | 18 - 36 inches | Hinged at top, opens outward — small opening, rarely useful for furniture |
| Room | Typical Window Width | Typical Window Height | Notes |
|---|---|---|---|
| Living room | 36 - 48 inches | 48 - 60 inches | Largest standard windows; best candidates for furniture moves |
| Bedroom | 30 - 36 inches | 48 - 60 inches | Must meet egress code (see below) — usually large enough for a person |
| Bathroom | 24 - 30 inches | 36 - 48 inches | Smaller and often obscured glass — rarely useful for furniture |
| Kitchen | 24 - 36 inches | 36 - 48 inches | Often above the sink; limited height clearance below the sill |
| Basement | 30 - 36 inches | 18 - 24 inches | Egress windows are larger (see code below); standard basement windows are too small |
Just like doors, the window frame size is not the same as the usable opening. The frame includes the casing, stops, and tracks that hold the sash in place. On a double-hung window, the clear opening when the bottom sash is raised is typically the full frame width minus 0.5 to 1 inch on each side (for the tracks) and only half the frame height. Removing the bottom sash eliminates the height restriction and gives you the full frame opening minus the track width. On casement windows, the clear opening with the sash cranked fully open is the full frame dimensions minus the hinge hardware — usually within 0.5 to 1 inch of the frame size on each edge.
Building codes require bedrooms to have at least one egress window large enough for a person to escape in a fire. The IRC (International Residential Code) Section R310.2 requires a minimum net clear opening of 5.7 square feet, with a minimum width of 20 inches and minimum height of 24 inches. The maximum sill height is 44 inches from the floor. This means every code-compliant bedroom window is at least 20 inches wide and 24 inches tall when fully open — large enough for many furniture items when tilted or with the sash removed.
| Furniture Item | Typical Dimensions | Minimum Window Opening Needed | Notes |
|---|---|---|---|
| Mattress (twin) | 38" × 75" × 8-10" | 24" × 40" (tilted) | Compresses slightly; fits through most egress windows |
| Mattress (queen) | 60" × 80" × 10-14" | 36" × 62" (tilted) | Needs a large casement or sash-removed double-hung |
| Couch (3-seat) | 84" × 35" × 33" | 36" × 35" | Must be hoisted vertically; professional rigging required above 1st floor |
| Dresser | 36-60" × 18" × 30-36" | 24" × 38" | Smaller dressers fit through most bedroom windows |
| Desk | 48-60" × 24-30" × 30" | 30" × 32" | Remove legs or drawers to reduce dimensions |
| Bookshelf | 30-36" × 12" × 72" | 14" × 32" (on side) | Thin profile — fits through most windows when turned sideways |
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Frequently asked
Casement windows are the best because the entire sash swings outward, giving you the full frame opening. A 36-inch casement provides about 35 inches of clear width. Double-hung windows are second best if you remove the sash — otherwise, the opening is only half the frame height.
01Standard double-hung windows are 24 to 36 inches wide and 36 to 60 inches tall. Casement windows range from 24 to 36 inches wide and 36 to 72 inches tall. Sliding windows can be 36 to 72 inches wide. The usable opening depends on the type — casements open fully, while double-hung and sliding windows open to only half their frame size.
02Yes, on most double-hung, casement, and sliding windows. Modern tilt-in double-hung sashes take about 2 minutes to remove. Older windows require removing the stop molding (10 to 15 minutes). Casement sash removal takes 10 to 15 minutes with a screwdriver. This typically doubles the usable opening height on double-hung windows.
03No. Picture windows are fixed glass — they do not open at all. They cannot be used for furniture access without replacing or cutting the window, which is not practical. If the room only has picture windows, you must use the door, or check other rooms for operable windows.
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