Indoor Hallways are 5 blocks wide (same width as the hallway) and 7 blocks tall (starting 1 block below the floor). The spawn area goes the entire length of the hallway.

Possible Spawning Blocks: 10 per block of hallway length.

Outdoor Hallways

Outdoor Hallways are 5 blocks wide (same width as the hallway) and 10 blocks tall (starting 4 block below the floor). The spawn area goes the entire length of the hallway.

Possible Spawning Blocks: 15 per block of hallway length.

Covered Four-Way Intersections

Covered Four-Way Intersections are 7x7 squares (same size as the corners) and are 9 blocks tall (starting 1 block below the floor).

Possible Spawning Blocks: 147

Open Four-Way Intersections

Open Four-Way Intersections are 19x19 squares (centered on the middle block of the intersection) and are 10 blocks tall (starting 4 blocks below the floor).

Possible Spawning Blocks: 1083

Lava Rooms

Lava Rooms are 13x13 squares (centered on the lava block in the middle of the room) and are 14 blocks tall (starting 4 blocks below the floor).

Possible Spawning Blocks: 676

Netherwart Rooms

Netherwart Rooms are 13x13 squares (centered on the middle stair, third row up from the bottom in the middle of the room) and are 14 blocks tall (starting 4 blocks below the floor level at the base of the stairs).

Possible Spawning Blocks: 676

Patio Rooms

Patio rooms are 9x9 squares (centered on the middle block of the first step up to the patio, or the 5th block in from the patio fence) and are 7 blocks tall (starting 1 block below the hallway floor).

Possible Spawning Blocks: 162

Indoor Hallway Staircase

Indoor Hallway Staircases are 5 blocks wide (same width as the hallway) and 10 blocks long (starting from the top stair) and are 14 blocks tall (starting 1 block below the hallway at the bottom of the staircase).

Possible Spawning Blocks: 200

Blaze Spawner Pad

Blaze Spawner Pads are 7 blocks wide (same width as the fences on the left and right of the spawner) and 9 blocks long (starting at the fence behind the spawner) and 8 blocks tall (starting 1 block below the lowest step/hallway). Note that it is generally recommened to save your blaze spawner because they can not be replaced.

Possible Spawning Blocks: 126

Mini Stair Room

Mini Stair Rooms are 7x7 squares (centered on the middle of the room, 4 blocks in from the doorway) and 11 blocks tall (starting 1 block below the floor).