Setobrick

LEGO part 3861b: Door 1 x 4 x 5 with 4 Panes, Squared Base

Windows and Doors12 colours72 sets

LEGO part LEGO part 3861b: Door 1 x 4 x 5 with 4 Panes, Squared Base

Specifications

Reference3861b
CategoryWindows and Doors
MaterialABS plastic
Colours12
Sets72
Listed pieces150
First appearance1995
Latest appearance2007
Element (Red)386121
Most common colourRed
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3861b, Door 1 x 4 x 5 with 4 Panes, Squared Base, belongs to the Windows and Doors category. It exists in 12 colours and appears in 72 sets of our database, from 1995 to 2007, for a total of 150 listed pieces. Its most common colour is Red.

Number 3861b identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in red, it is 386121.

Part 3861b through the years

The oldest set in our database that contains part 3861b is 6414 Dolphin Point, released in 1995 in the Town theme. No set in our database uses it after 2007, the year of 10190 Market Street. To get it today, look for older sets or buy it second-hand.

Its peak year is 1998, with 20 sets containing it. The set with the most copies is 9274 Doors and Windows: 20 copies, against an average of 2.1 per set.

It is spread across several themes, led by Freestyle (31%), Universal Building Set (18%) and Educational and Dacta (8%). With 72 sets, it ranks no. 1,360 of 2,731 parts in our database and no. 26 of 76 in the Windows and Doors category.

Sets containing part 3861b, by period

PeriodSets
19955
199612
19974
199820
19996
20000
20013
20028
20031
20043
20051
20063
20076

Colours of part 3861b

2 colours appear in only one set: black (4857 Doc Ock's Fusion Lab) and brown (4728 Escape from Privet Drive).

Colour (element ID)SetsPiecesExample sets
Red3861212873495464947335
Blue38612315234411100414186876
Yellow4111937 · 3861241019429311944288
White4160992 · 3861017810190495410173
Green4166482 · 41063655116765101739650
Medium Dark Pink38612235929041614151
Reddish Brown422543433475653787785
Pink3861092264186414
Dark Blue45126892297644982
Light Gray4161049 · 41063712267696762
Black4239372 · 386126114857
Brown4179424114728

Where to buy part 3861b

Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.

Sets that include part 3861b

Sets ranked by popularity that include at least one part 3861b, in any colour.

Frequently asked questions

How many LEGO sets include part 3861b?

Part 3861b (Door 1 x 4 x 5 with 4 Panes, Squared Base) appears in 72 sets listed on Setopedia, from 1995 to 2007, in any colour.

Which LEGO set contains the most copies of part 3861b?

Set 9274 Doors and Windows, released in 1998, contains 20 copies, the highest count in our database. On average, a set containing part 3861b has 2.1.

Which colours does LEGO part 3861b come in?

12 colours are listed for part 3861b. The most common is Red, found in 28 sets.

What is the rarest colour of part 3861b?

According to our inventories, it is black, found in only 1 set (4857 Doc Ock's Fusion Lab).

What is the element ID of part 3861b in red?

In red, part 3861b has element ID 386121. Number 3861b is the mould number, the same for every colour.

Is LEGO part 3861b still used in recent sets?

Not in our database: its last set dates from 2007 (10190 Market Street). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 3861b individually?

Single parts 3861b can be ordered on Pick a Brick (lego.com) in colours currently produced, or on BrickLink for older colours. The part is also included in the sets listed on this page.