The traditional hanging method. Use with wire or without wire hanging directly onto hooks. Ideal for lightweight frames. Great for converting tabletop frames to wall frames.
HangZ 10009B 75lb 2 Hole D Ring (50-Pack)
Picture Hanging - Ace Hardware
Everything You Need To Know About D-rings and Strap Hangers - Picture Hang Solutions
Heavy Duty Large Strap Hanger - 30 Pack - 3 Hole D-Ring Hanger
Heavy Duty Mirror Hardware. Includes Walldog anchorless fasteners.
These really are huge strap hangers - this is the largest and strongest strap hanger on the market. The Mega Strap Hangers or d-ring hangers are super heavy duty steel ring hangers held by a doubled over steel strap. Four screw holes allow for each d-ring hanger to be securely attached to wood. This is an extra large strap hanger at a full 6 and 1/2 inches long. The ring part of the hanger is 1 and 1/2 wide.
Super Heavy Duty Extra Large Strap Hanger - 4 Hole D-Ring Hanger
OOK 75 lb Large D-Ring Hangers (2 ct)
HangZ 75lb 2 Hole D Ring 10009, 10009B
Picture Hanging - Ace Hardware
OOK 59980 D-Ring Hangers, Mirror Hangers, Picture Hangers, ReadyScrew, Steel, Zinc Plated, 60lb (10 Set) : Everything Else
OOK 30 lb. Zinc-Plated Narrow D-Ring Hangers with Screws (3-Pack) 50206 - The Home Depot
D Ring Hanger