Answer:

ELLS

Answer	Crossword Clue
ELLS	Right-angled bends
ELLS	Architectural annexes
ELLS	Building extensions

ELLS	Building wings
ELLS	Certain wings
ELLS	Elbows in pipes
ELLS	Home extensions
ELLS	Pipe bends
ELLS	Wright's wings
ELLS	Additions
ELLS	Building add-ons

ELLS	Wings
ELLS	Ninety-degree angles
ELLS	Right-angled extensions
ELLS	Tetris shapes
ELLS	Building additions
ELLS	Construction extensions
ELLS	Housing add-ons
ELLS	Builder's add-ons

ELLS	Pipes with bends
ELLS	Right-angled pipes
ELLS	Wings on buildings
ELLS	Right angles
ELLS	Right-angle bends
ELLS	Blueprint additions
ELLS	Piping bends
ELLS	Some extensions

ELLS	Pipe joints
ELLS	Some bends
ELLS	Expansion projects
ELLS	Conduit fittings
ELLS	Extensions
ELLS	Plumbing joints
ELLS	Pipe shapes
ELLS	Some annexes

ELLS	90-degree shapes
ELLS	Architectural shapes
ELLS	Construction shapes
ELLS	Wings with blueprints
ELLS	Six-sided rooms

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.