mount tv on slanted ceiling

Mount-It! Tilting TV Wall Mount Bracket for Small TV and Computer Monitors, Low-Profile Design with Quick Release Function, Fits Up to 27 Inch Screens

Mount-It! Full Motion Computer Monitor Wall Mount, Articulating Arm Fits Single Monitor Screens 19 - 30 Inches, VESA 75 & 100 Compatible, 33 Lbs.

Mount-It! Low-Profile Fixed TV Wall Mount w/ Removable Plate | Flush Wall Mounting Bracket Fits 23" - 42" Screens Up To VESA 200x200 mm, 66 Lbs. Cap.

Mount-It! TV Ceiling Mount Bracket, Adjustable Height Full Motion, Tilting and Swiveling for Flat Panel & Plasma TVs, Fits 22 - 75 Inch TVs, White

Monoprice TV Wall Mount Bracket For TVs Up to 55in, Tilt, Max Weight 77lbs, VESA Patterns Up to 600x400, UL Certified - Select Series