90 degree pipe joints, 4 letters
90-degree building extensions, 4 letters
Additions to buildings, 4 letters
Architects' annexes, 4 letters
Architects' extensions, 4 letters
Architectural add-ons, 4 letters
Architectural add-ons, sometimes, 4 letters
Architectural additions, 4 letters
Architectural annexes, 4 letters
Architectural shapes, 4 letters
Architectural wings, 4 letters
Blueprint additions, 4 letters
British length units of approximately 45 inches, 4 letters
Building extensions, 4 letters
Construction extensions, 4 letters
Construction shapes, 4 letters
Direction-changing pipes, 4 letters
Extensions of a sort, 4 letters
Features of hills, frills and bills?, 4 letters
Former British length units, 4 letters
Former length measures, 4 letters
Letter-shaped building wings, 4 letters
Letters between kays and ems, 4 letters
Limas, in the phonetic alphabet, 4 letters
Main house-to-barn connections, 4 letters
Ninety-degree pipe joints, 4 letters
Office workstations, maybe, 4 letters
Old English measures equal to 45 inches, 4 letters
Old measures equal to 45 inches, 4 letters
Perpendicular extensions, 4 letters
Perpendicularly built extensions, 4 letters
Pipes with right-angle bends, 4 letters
Plumber's right-angled joints, 4 letters
Plumbing connections, 4 letters
Popular kitchen layouts, 4 letters
Remodeling projects, 4 letters
Right-angle extensions, 4 letters
Right-angle fittings, 4 letters
Right-angle shape letters, 4 letters
Right-angled annexes, 4 letters
Right-angled letters, 4 letters
Right-angled pipe joints, 4 letters
Sections of a large home, 4 letters
Some architectural add-ons, 4 letters
Some building additions, 4 letters
Some building extensions, 4 letters
Some building wings, 4 letters
Some connecting pipes, 4 letters
Some housing add-ons, 4 letters
These wings don't flap, 4 letters
They're seven positions after today's theme, 4 letters
Under-the-sink joints, 4 letters
Wings that don't flap, 4 letters
Wings with blueprints, 4 letters
Analyst who leaked the Pentagon Papers, 8 letters
He leaked the Pentagon Papers, 8 letters