DaVinci Union 4-in-1 Convertible Crib
The DaVinci Union 4-in-1 Convertible Crib converts through 4 stages and weighs 30 lb, per DaVinci. A 4-in-1 crib with five finishes.
- $159List price
- 4-in-1Stages
- 4Mattress heights
- 30 lbWeight
How the Union 4-in-1 Convertible Crib stacks up
Against the 216 convertible cribs we track. The shaded band is where the middle half of them fall; the dot is this one.
Within the typical range for convertible cribs (4-in-1 to 5-in-1).
Below the typical range for convertible cribs (45.4 lb to 70.8 lb).
Below the typical range for convertible cribs ($219.99 to $549).
What sets the Union 4-in-1 Convertible Crib apart
Measured against the 216 convertible cribs we compare, from each maker's published specs.
- 3rd lightestof the 193 convertible cribs with it published: 30 lb
Next to its closest matches
- Delta Children Sonny 4-in-1 Convertible CribNext to it, the Union 4-in-1 Convertible Crib is 29.5 lb lighter; $9 more.
- Delta Children Reese 4-in-1 Convertible CribNext to it, the Union 4-in-1 Convertible Crib is 38 lb lighter; $21 less.
- DaVinci Birdie 4-in-1 Convertible CribNext to it, the Union 4-in-1 Convertible Crib is 18.4 lb lighter; $30 less.
Mattress that fits
The maker says: Standard crib mattress; interior 52 x 28 in, maker names no mattress size.
Mattress in the box: no, sold separately.
It takes a full-size crib mattress. Cribpicks lists 42 single-sided mattresses and 82 two-stage mattresses.
Stage by stage
The maker calls it a 4-in-1; the kits are sold separately.
| Setup | Kit on Cribpicks for this crib |
|---|---|
| Crib | – |
| Toddler bed | Toddler Bed Conversion Kit (M3899) ($89) |
| Daybed | – |
| Full-size bed | Twin/Full-Size Bed Conversion Kit (M4799) ($129) |
Kits, per the maker: Toddler Bed Kit M3899 ($89) and Twin/Full-Size Kit M4799 ($129), sold separately.
Listed features
- Very low price
- Light at 30 lb
- Four stages
Worth checking
- No kits included
Where to buy the Union 4-in-1 Convertible Crib
Prices and availability change. We may earn a commission from some links.
- Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
- Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| DaVinci Union 4-in-1 Convertible Crib | |
|---|---|
| Type | Convertible crib |
| List price | $159 |
| Stages | 4-in-1 |
| Converts to | Toddler bed, Daybed, Full-size bed |
| Conversion kit | Toddler Bed Kit M3899 ($89) and Twin/Full-Size Kit M4799 ($129), sold separately |
| Mattress it takes | Standard crib mattress; interior 52 x 28 in, maker names no mattress size |
| Mattress included | No |
| Mattress heights | 4 |
| Size | 53.5 × 30.3 × 33.5 in |
| Weight | 30 lb |
| Child weight | Up to 50 lb |
| Folds | No |
| Wheels | No |
| Material | New Zealand pine and TSCA plywood |
| Finishes | 5 |
| GREENGUARD Gold | Yes, per the maker |
| Federal crib standard | Maker says it meets it |
| Assembly | Described as easy to assemble, manual linked |
| Made in | Cambodia |
Compare the Union 4-in-1 Convertible Crib with
How each closest rival differs from the Union 4-in-1 Convertible Crib, from the makers' specs.
- Delta ChildrenSonny 4-in-1 Convertible Crib4-in-159.5 lb$149.99
- 29.5 lb heavier
- $9 less
- Delta ChildrenReese 4-in-1 Convertible Crib4-in-168 lb$179.99
- 38 lb heavier
- $21 more
- DaVinciBirdie 4-in-1 Convertible Crib4-in-148.4 lb$189
- 18.4 lb heavier
- $30 more
- Delta ChildrenLily 4-in-1 Convertible Crib4-in-137.5 lb$189
- 7.5 lb heavier
- $30 more
Union 4-in-1 Convertible Crib: questions answered
From DaVinci's published specs, last checked 2026-11-02.
What mattress fits the DaVinci Union 4-in-1 Convertible Crib?
The maker says it takes a standard crib mattress; interior 52 x 28 in, maker names no mattress size, sold separately. Safe sleep: see the AAP's guide to safe sleep and NICHD Safe to Sleep. Check the label and the maker's instructions, and ask your pediatrician about your child.
What does the DaVinci Union 4-in-1 Convertible Crib convert to?
It's a 4-in-1: toddler bed, daybed, full-size bed. Conversion kit: Toddler Bed Kit M3899 ($89) and Twin/Full-Size Kit M4799 ($129), sold separately.
What are the DaVinci Union 4-in-1 Convertible Crib limits?
The maker lists up to 50 lb. Follow the manual.
How big is the DaVinci Union 4-in-1 Convertible Crib?
About 53.5 × 30.25 × 33.5 in, 30 lb. The smallest convertible we track is the Ubabub Pod 2-in-1 Convertible Crib with Junior Bed Conversion Kit.
Is the DaVinci Union 4-in-1 Convertible Crib GREENGUARD Gold certified?
The maker says it is. GREENGUARD Gold is a third-party certification for low chemical emissions into indoor air.
What's the difference between the DaVinci Union 4-in-1 Convertible Crib and the Delta Children Sonny 4-in-1 Convertible Crib?
By the maker specs, the Sonny 4-in-1 Convertible Crib lists for $9.01 less. See them side by side.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
More convertible cribs
- Delta ChildrenLulu 5-in-1 Convertible Crib5-in-137.3 lb$159.99
- Delta ChildrenFrankie 4-in-1 Convertible Crib4-in-144.3 lb$189.99
- Dream On MeChelsea 5 in 1 Convertible Crib5-in-137 lb$159.99
- Dream On MeSynergy MOD 5 in 1 Convertible Crib5-in-134 lb$159.99
- Dream On MeMagnolia 4-in-1 Convertible Crib4-in-146.3 lb$196.99
- Fisher-Price (made by Dream On Me)Meadowbrook 4 in 1 Convertible Full Size Baby Crib (6593FP)4-in-146.3 lb$196.99
Where these specs come from
Last checked 2026-11-02. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.