My shopping cart
Your cart is currently empty.
Continue ShoppingSea Frogs 4" Optical Glass Flat Short Port for Canon/Fujifilm/Sony Housings
SKU: SFFP90S4U4" | Optical Glass | Short 90mm (3.54") | 90mm Bayonet
Also available on the European website
The Sea Frogs 4'' (102mm) Optical Glass Flat Short (90mm/3.54'') Port Designed with a 90mm (3.54'') bayonet mount. It is compatible with most Sea Frogs/Salted Line underwater housings, excluding A6xxx and RX1xx series models
The 4'' (102mm) Flat Port is rated for depths of up to 40 meters (130 feet), ensuring reliable underwater performance.
Sony E 50mm F1.8 OSS (autofocus only)
Sony FE 28mm F2 (autofocus only)
Sony FE 35mm F1.8 (autofocus only)
Sony FE 50mm F1.8 (autofocus only)
Sony FE 85mm F1.8 (autofocus only)
Sony FE PZ 16-35mm F4 G (autofocus, manual zoom gear available)
Sigma 18-50mm F2.8 DC DN E-Mount (autofocus, manual zoom gear available)
Canon EF-M 11-22mm F4-5.6 IS STM (autofocus, manual zoom gear available)
Canon EF-M 15-45mm F3.5-6.3 IS STM (autofocus, manual zoom gear available)
Canon EF-M 18-55mm F3.5-5.6 IS STM (autofocus, manual zoom gear available)
Fujifilm XF 18-55mm F2.8-4 R LM OIS (autofocus, manual zoom gear available)
Fits Sea Frogs housings with:
90mm (3.54'') bayonet
Width: 102mm (4'')
Height: 102mm (4'')
Length: 90mm (3.54'')
Weight: ±475gr (1.047lb)
Optical Glass
Polycarbonate (Base)
Standard Sea Frogs 90mm Bayonet Mount
Sea Frogs 4" Optical Glass Flat Short Port for Canon/Fujifilm/Sony Housings x1
Flat Port Cap (Back) x1
Spare O-ring x1
Silicone Grease (5ml)
Disclaimer: Every effort has been made to ensure that the descriptions and images provided are accurate and up-to-date. However, occasional errors may occur, and product features, specifications, or appearances may change without notice. We recommend verifying any details that are critical to your purchasing decision.
© 2025 SALTED LINE | Theme by Mile High Themes | Powered by Shopify