Welcome to Defender Canada! 
Sea-Dog Screw-Out Deck Plate Item # 2139285
Description
Specifications:
- Material: UV Resistant ABS
- Installs with six #8 FH fasteners (not included)
4 1/2" Dimensions:
- A: 4 7/16"
- B: 5 3/4"
- C: 4 1/2"
- D: 5 1/8"
5 1/2" Dimensions:
- A: 5 7/16"
- B: 6 3/4"
- C: 5 1/2"
- D: 6 1/8"
6 1/2" Dimensions:
- A: 6 1/2"
- B: 8 1/8"
- C: 6 1/2"
- D: 7 3/8"
Note: When installing, lubricate with vaseline or teflon grease and use silicone sealant on hull or deck surface.