Universal Building Set (722-1) is a Universal Building Set LEGO set released in 1980 with 302 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Universal Building Set sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 92 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1980 (46 years ago — may be retired)
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Catalog scale
302 parts listed · 92 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~679 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Parts in this set
92 parts · page 1 of 2 · updating…
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Antenna 1 x 4 with Rounded Top3957a · ×1 · Black -
Bracket 2 x 2 - 2 x 23956 · ×2 · Light Gray -
Brick 1 x 13005 · ×18 · Red -
Brick 1 x 13005 · ×2 · Light Gray -
Brick 1 x 23004 · ×3 · Trans-Clear -
Brick 1 x 23004 · ×24 · Red -
Brick 1 x 23004 · ×6 · Light Gray -
Brick 1 x 33622 · ×4 · Red -
Brick 1 x 33622 · ×2 · Light Gray -
Brick 1 x 43010 · ×2 · Light Gray -
Brick 1 x 43010 · ×2 · Trans-Clear -
Brick 1 x 43010 · ×10 · Red -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Black 15 Bars Grill Print3010apr0004 · ×2 · Light Gray -
Brick 1 x 63009 · ×12 · Red -
Brick 1 x 63009 · ×2 · Light Gray -
Brick 1 x 83008 · ×12 · Red -
Brick 1 x 83008 · ×2 · Light Gray -
Brick 2 x 2 without Inside Ridges3003a · ×2 · Red -
Brick 2 x 3 without Cross Supports3002a · ×2 · Red -
Brick 2 x 4 without Cross Supports3001a · ×2 · Red -
Brick Arch 1 x 63455 · ×2 · Red -
Brick Round 1 x 1 Open Stud3062b · ×4 · Black -
Brick Round 1 x 1 Open Stud3062b · ×2 · Trans-Yellow -
Brick Sloped 33° 3 x 23298 · ×3 · Red -
Brick Sloped 33° 3 x 63939 · ×2 · Trans-Clear -
Brick Sloped 45° 2 x 1 without Bottom Pin3040a · ×4 · Light Gray -
Brick Sloped 45° 2 x 1 without Bottom Pin3040a · ×2 · Red -
Brick Sloped 45° 2 x 23039 · ×4 · Red -
Brick Sloped 45° 2 x 23039 · ×2 · Trans-Clear -
Brick Sloped 65° 2 x 2 x 2 Smooth without Bottom Tube3678a · ×3 · Trans-Clear -
Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin3747a · ×3 · Red -
Brick Sloped Inverted 45° 2 x 13665 · ×4 · Light Gray -
Brick Sloped Inverted 45° 2 x 13665 · ×4 · Red -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366002.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×4 · Light Gray -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366021.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×8 · Red -
Brick Special 1 x 1 x 2 with Shutter Holder3581 · ×2 · Red -
Door 1 x 3 x 1 Left3822 · ×1 · Light Gray -
Door 1 x 3 x 1 Right3821 · ×1 · Light Gray -
Door 1 x 3 x 2 Left3189 · ×1 · Red -
Door 1 x 3 x 2 Right3188 · ×1 · Red -
Door 1 x 3 x 4 Left3193 · ×1 · Light Gray -
Door 1 x 3 x 4 Right3192 · ×1 · Light Gray -
Door 1 x 4 x 63644 · ×2 · Yellow -
![Hinge Plate 2 x 9 with Hole Close to Hinge [Complete Assembly]](https://cdn.rebrickable.com/media/parts/photos/7/3324ac01-7-42340a88-1788-4c0c-ab35-f080254585d4.jpg)
Hinge Plate 2 x 9 with Hole Close to Hinge [Complete Assembly]3324ac01 · ×1 · Light Gray -
Hook, Plate 1 x 2 with Crane Hook Right3127b · ×1 · Light Gray -
Plate 1 x 13024 · ×2 · Light Gray -
Plate 1 x 13024 · ×4 · Trans-Yellow -
Plate 1 x 13024 · ×2 · Red