Amazon.com : GoPro Original AHDEH-301 197' / 60m Waterproof Underwater Protective Dive Housing with Standard, Skeleton and BacPac Backdoors for Hero 3, Hero 3+, Hero 3 Plus, Hero 4 Camera : Electronics
Transparent Waterproof Backdoor Back Cover Replacement For GoPro Hero 3+ 4 Case | eBay
SOONSUN Backdoor Case Cover for GoPro Hero 3+ 4 Standard Waterproof Protective Housing Back Door Replacement Go Pro Accessories
Bodhi Floaty Case - Huge upgrade from floaty backdoor
GoPro Waterproof Dive Housing (Waterproof to 197') for HERO3, HERO3+, HERO4 with Standard Back Door, Quick Release Buckle at KEH Camera
Amazon.com : SOONSUN Backdoor Case Cover Kit for GoPro Hero 3+ Hero 4 Standard Waterproof Housing Case (Standard Backdoor + Skeleton Backdoor + LCD Touch Backdoor) - Standard Size Backdoor : Electronics
GoPro Waterproof Dive Housing (Waterproof to 197') for HERO3, HERO3+, HERO4 with Standard Back Door, Quick Release Buckle at KEH Camera
Amazon.com : SOONSUN Standard Waterproof Case Dive Housing for GoPro Hero 4 Black, Hero 4 Silver, Hero 3+, Hero 3 Cameras with BacPac Backdoor for Extended Battery or Bacpac Screen – Waterproof Up to 40 Meters : Electronics
EveryMarket
Battery Eliminator WATERPROOF Back Door For GOPRO HERO3 HERO4 Camera Housing SLM | eBay
QIUNIU Transparent Standard Waterproof Back Door Backdoor Cover Mount Replacement for GoPro Hero 3+ 4
For GoPro Hero 3 3+ 4 Skeleton Protective Housing Case with LCD Touch Backdoor | eBay
Andoer Float Sponge Box Adhensive Sticker Waterproof Backdoor Case Cover for Gopro Hero 4 3+ 3 Accessories
Amazon.com : SOONSUN Backdoor Case Cover Kit for GoPro Hero 3+ Hero 4 Standard Waterproof Housing Case (Standard Backdoor + Skeleton Backdoor + LCD Touch Backdoor) - Standard Size Backdoor : Electronics
Waterproof Touch Screen Backdoor Back Case Cover for GoPro Hero 4 Camera - Walmart.com
Amazon.com : SOONSUN Standard Waterproof Case Dive Housing for GoPro Hero 4 Black, Hero 4 Silver, Hero 3+, Hero 3 Cameras with BacPac Backdoor for Extended Battery or Bacpac Screen – Waterproof Up to 40 Meters : Electronics
NEW LCD Screen Bacpac Backdoor + Waterproof Housing Shell Case for GoPro Hero 3+ | eBay
Gopro Hero 4 3+3 Bacpac Lcd Screen+45m Waterproof Housing Case(extended Backdoor) For Accessories Gopro Hero 3+4 Black Accessory - Sports & Action Video Cameras Accessories - AliExpress
100% Original Waterproof Backdoor Housing Cover Case For Gopro Hero 4 hero 3 3+ Camera Accessories Mount - AliExpress