Delta Children William W204130 4-in-1 Convertible Crib review

This document-based assessment covers Delta Children’s William W204130 4-in-1 Convertible Crib, using the exact U.S. product page and variant data, its linked Booklet A, and the two finish-specific manufacturer images. I did not assemble, own, measure or test the crib, inspect a retailer carton, or independently test its safety or emissions claims.

One full-size crib, followed by furniture conversions

Delta describes this as a full-size crib that converts to a toddler bed, daybed and sofa. Those are later furniture arrangements, not mini, midi or bassinet sleep spaces, and the exact page does not describe an adult-bed conversion. The “4-in-1” count is best read as one crib plus those three furniture modes—not as four crib sizes. If you need a smaller first sleep surface or wheels, the reviewed William page and booklet do not establish either.

The visible design is distinctive: the manufacturer images show vertical slats, rounded posts and feet, and a scalloped apron below the mattress area. The two captured variants are Natural Sandstone W204130-1544 (UPC 080213162399) and Bianca White W204130-130 (UPC 080213162382). Delta’s structured record assigns both to product ID 14647740465520. No functional or dimensional difference between the finish variants is established in the reviewed records; a finish image identifies what is pictured, not which finish or parts a seller will ship.

Use the listed footprint as a filter, not a room-fit promise

Delta lists assembled dimensions of 30.25 inches wide, 34 inches high and 54.25 inches deep. The width finder accepts half-inch steps, so a 30-inch width-only cap excludes William and 30.5 inches is the first selectable cap that includes its 30.25-inch listed width. This is a manufacturer-stated product dimension, not a measurement made for this review and not the room clearance you need around the crib. Check the other axis, doorways, delivery access, assembly space and any room needed to convert the frame.

That small-width distinction is practical rather than absolute: the separately assessed Delta Children Noah W202130 is listed at 30 inches wide, while William is listed at 30.25 inches. A quarter inch in a catalog field does not establish a real-world fit by itself, and the two model numbers do not imply shared parts. Use each crib’s own instructions and confirm the room and route independently.

Budget and verify the sleeping surface

Delta says the standard crib mattress is sold separately. William’s Booklet A sets a minimum mattress size of 27¼ by 51⅝ inches and a maximum thickness of 6 inches. Those are mattress requirements, not outside-frame dimensions. Before buying, compare the exact mattress label with the instructions for the physical crib and do not add padding to correct a gap or fit problem.

The booklet describes three mattress-support positions. It says the highest setting is for newborns, directs caregivers to lower the mattress as a child grows, and requires the lowest position once the child can pull to standing. At the highest position, the manual also requires the front rail to remain at least three inches above the top of the mattress; if it does not, the support must be lowered. For crib use, the stop point is when the child begins to climb out or reaches 35 inches tall, whichever comes first.

Count conversion parts separately

Delta describes daybed and sofa conversions as included, but identifies toddler guardrail W100725 as sold separately. Booklet A names W100725 for this crib, requires a conversion rail for the toddler-bed layout, and says not to use the daybed/sofa arrangement without its conversion rail installed. Do not assume that every retail carton contains the same accessory set: check the exact offer, finish and written package contents, especially if a later arrangement matters to you.

The toddler-bed section gives an age minimum of 15 months and a maximum user weight of 50 pounds. It also specifies a full-size crib mattress at least 27¼ by 51⅝ inches and no more than 6 inches thick. These are model-specific instructions, not limits to borrow for a different Delta crib. The manual calls for adult assembly, cautions against power screwdrivers, and says to keep the instructions for future use; match the booklet and crib-end label before assembly or a conversion.

Manufacturer claims and sensible checks

Delta describes New Zealand pine and TSCA-compliant engineered wood, and lists GREENGUARD Gold and JPMA certification claims. I did not audit a certificate or conduct a material, emissions or safety test, so these remain manufacturer statements. The exact page and instructions do not document wheels for the full-size arrangement; that is a limit of the reviewed evidence, not a physical inspection of every possible third-party part.

William is worth comparing if you want a full-size crib with three mattress-support positions, a listed 30.25-inch width and manufacturer-described toddler, daybed and sofa routes. The drawbacks are specific: the standard mattress is separate, the toddler guardrail is a separate purchase, and the width field leaves the room and access work to you. Match the offer to W204130-1544 or W204130-130, check the mattress and rail package, and retain the unit-matched booklet. An exact Amazon U.S. product listing was not verified; any retailer search should be treated as a full-model search, not proof of an exact listing or package.

Primary documents: Delta Children William W204130 product page, its exact variant data, and the page-linked William Booklet A.