Your search for 40 flat panel t.v. returned the following:

Ultra-thin multi-purpose home theater speaker

IN STOCK

• measures just 1-1/2" deep — ideal match for ultra-thin TVs 40" & up
• designed as a left, right, or center channel speaker with on-wall placement
• frequency response 100-30,000 Hz

40" 1080p LED-LCD HDTV with Wi-Fi®

IN STOCK

3 people say 

• LED edge backlight for high picture contrast
• 120Hz refresh rate plus backlight scanning for blur reduction
• Internet-ready Smart TV with dual-core processor for improved web browsing and app multitasking

40" 1080p 3D LED-LCD HDTV with Wi-Fi®

IN STOCK

2 people say 

• 3D TV (includes 2 pairs of Samsung active 3D glasses)
• Internet-ready Smart TV with dual-core processor for improved web browsing and app multitasking
• 2-way screen mirroring via Wi-Fi — send content wirelessly from device-to-TV or TV-to-device with compatible Samsung smartphones and tablets