4848 SERIES

4'-0" x 4'-0" Torsion Assist Frame & Cover Assembly
Available In Traffic or Parkway Loading

• Torsion Assist Covers available in diamond or slip resistance plate
• Frame Assembly available in both cast in or skirted 
• Torsion assist to reduce the lifting weight of cover 
• Hardware is cadmium plated to reduce corrosion 
• Locking kickstand prevents the covers from accidentally closing 
• Covers available to open 90 or 180 degrees 
• Frame and covers available galvanized or painted 
• Covers available with security bolts or locking mechanisms 
• Covers available with either lifting handles or pick holes 
• Other sizes available upon request

A. LOADING:
- HS-10 "Pedestrian"
- HS-20 "Light-Incidental Traffic"
- HS-20-44 "Full Vehicular Traffic"
- "Airport Rated"

B. MATERIAL:
- Steel, Hot Rolled To Mill Spec. 
- Galvanized Finish
- Aluminum (Both Frame and Doors or "combo")
- Stainless Steel (Both Frame and Doors or "combo")

C. FRAME STYLE
- Angle Frame (Rebar for Cast-in or mounting holes)
- "Skirted frame" (For core style casting)
- "Self leveling skirted frame" (For leveling to grade)
- Water resistant (Integrated channel with drain pipe)
- Self cleaning (Angled, skirted frame)

D. HINGE STYLE:
- Drag-off style "Bolt down"
- Hinged "Non-Torsion"
- Torsion assist (90°, Full time 180°, 1-time 180°)

E. FASTENING MECHANISM
- Standard hex-head bolts
- Penta-head security bolts
- Swing lock assembly with penta or hex-head slam-lock
- Recessed Padlock

F. TOP PLATE SURFACE:
- Diamond pattern "Floor plate"
- Slipnot/Algrip applied texture
- Concrete "Pan filled"
- Concrete/plastic polymer

G. MARKINGS:
- Welded lettering on top plate of door
- Stamped / "Embossed" Marking
- Etched into top plate of door
- Removable id plate (Markings stamped, welded, plasma cut or etched)

H. FINISH:
- Hot dipped galvanized
- Painted/Powder coated
- Bare metal

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