A 5 ft arch tops a doorway or frames a sign-in or cake table; 10 ft covers a standard dessert table or living-room backdrop and suits most birthdays and showers; 20 ft fills a full photo wall, wedding backdrop or wide entrance; 40 ft is for venues, stages and gyms. Party Box kits cost $68, $129, $249 and $499.
Quick takeaways
- Choose by the job (doorway, table, wall, stage), not by guest count.
- 10 ft is the most versatile home size.
- Measure the path the garland travels, then add 10–20% for curves.
- When torn, size up — extra length drapes beautifully.
The four sizes side by side
Every Party Box theme is sold in all four sizes, and every size uses the same hand-graded premium latex, the same designed palette and the same build kit — loop balloons, Magic Tape, a how-to-hang guide and spares. The only thing that changes is how much garland you get, so you can pick a look you love first and then choose the length your space needs. Bigger kits take longer to build, and times vary with helpers and experience: roughly 1 hour for 5 ft, 1–2 hours for 10 ft, 2–3 hours for 20 ft and 3–4 hours or more for 40 ft. For 20 ft and up we recommend an electric balloon pump.
If you remember one rule, make it this: the arch should be a little wider than whatever it frames. A garland that overshoots the table or doorway by a foot or two on each side looks generous and intentional; one that stops short looks like it ran out.
| Kit | Length | Covers | Price |
|---|---|---|---|
| The Welcome | 5 ft | Door topper, sign-in table, high chair, cake corner | $68 |
| The Celebration | 10 ft | 6 ft dessert table, mantel, living-room backdrop | $129 |
| The Grand | 20 ft | Full photo wall, double doors, wedding backdrop | $249 |
| The Kingdom | 40 ft | Stages, gyms, ballrooms, wall-to-wall | $499 |
Free planning toolNot sure how many balloons your space needs? Try our balloon arch calculator — it works it out from your arch length.
5 ft — The Welcome
Small but mighty. Five feet of garland crowns a standard interior door, swoops along one corner of a cake table or frames a guest-book station. It’s also the perfect “second arch” — a little welcome at the front door that matches the big arch inside. Explore The Welcome.
10 ft — The Celebration
Our most popular size, and for good reason: ten feet is enough to sweep up one side of a 6 ft dessert table, crest across the top and spill down the other end, or to make a full half-arch backdrop in a living room. If you’re planning a birthday, baby shower or bridal shower at home, this is almost always the answer. Explore The Celebration.
20 ft — The Grand
When the arch needs to fill a camera frame with a group in front of it, go 20 ft. It covers a full photo wall, frames a double front door, wraps a head table or creates a true arch over a wedding ceremony spot. Explore The Grand.
40 ft — The Kingdom
Venues swallow small decor. Tall ceilings and long sightlines need scale, and 40 ft delivers: stage edges, gym walls, ballroom entrances and floor-to-floor statement arches. Plan about two hours with a helper and an electric pump. Explore The Kingdom, or read about balloon arches for large halls and gyms.
Size by room, at a glance
| Space | Recommended kit |
|---|---|
| Front door or interior doorway | 5 ft |
| Cake or dessert table (4–6 ft) | 10 ft |
| Fireplace mantel | 10 ft |
| Living-room photo wall | 10–20 ft |
| Double doors or garage door | 20 ft |
| Wedding ceremony arch | 20 ft |
| School gym or ballroom wall | 40 ft |
| Stage front edge | 40 ft |
Two arches beat one huge one
A smart trick for parties that flow through several spaces: instead of one giant arch, use a 10 ft arch as the main photo backdrop and a matching 5 ft arch at the entrance. Guests get a “wow” at the door and again at the cake, and the matching palette ties the whole party together. Because every Party Box theme comes in all four sizes, matching is automatic.
Planning outdoors? Wind and sun change the math — read the backyard size guide and outdoor wind tips before you choose.
Common sizing mistakes
Still stuck? Our most-read guide, what size balloon arch do I need, walks through every common space room by room.
- Measuring only the table width. A garland that climbs and crests travels further than the table is wide.
- Forgetting ceiling height. In tall rooms, small arches look lost — lean longer.
- Sizing for the guest count. Fifty guests in a small room still need only a 10 ft backdrop.
- Ignoring the photo frame. If groups will pose, the arch has to be wider than the group.
- Going too small to save money. A sparse arch reads cheap; a full shorter one reads luxe.
Measure in five minutes
- Measure the width of the surface or opening.
- For a climbing half-arch, measure the path: up one side, over, and down as far as you want it to drape.
- Add 10–20% so it can curve instead of stretching flat.
- Round up to the next kit size.
Stylist tipNeed an in-between length like 15 ft or 30 ft? Build a custom arch priced by the foot.
