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- Type: single‑action spring flag hinge (one‑way spring return)
- Nominal size (H × W × T): ~4.0″ × 3.5″ × 3.0 mm
- Material: stainless steel (SS304/201)
- Design: window‑frame jamb leaf + straight three‑hole door leaf; internal spring; precision knuckle/pin; template screw pattern
- Finishes: Satin Stainless (SSS), Polished Stainless (PSS), Antique Brass (AB), Antique Copper (AC), PVD
- Applications: room doors, wooden gate doors; residential/light commercial
- Highlights: automatic one‑way closing, broad frame support, quiet operation, repeatable installation, long service life
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- Type: single‑action spring flag hinge (one‑way spring return)
- Nominal size (H × W × T): 4.0″ × 3.0″ × 2.5 mm
- Material: stainless steel (SS304/201)
- Design: window‑frame jamb leaf + wing door leaf; internal spring; precision knuckle/pin; template screw layout
- Finishes: Satin Stainless (SSS), Polished Stainless (PSS), Antique Brass (AB), Antique Copper (AC), PVD
- Applications: room doors and wooden gate doors; residential/light commercial
- Highlights: automatic one‑way closing, broad frame support, stable installation, quiet operation, long service life
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- Type: single‑action spring hinge (one‑way spring return)
- Sizes (H × W × T) range:
- 3.5″ × 3.5″ × 3.0 mm
- 4.0″ × 3.0″ × 2.0/3.0 mm
- 4.0″ × 3.5″ × 3.0 mm
- 4.0″ × 4.0″ × 2.5/2.7/3.0/3.3 mm
- 4.5″ × 4.0″ × 3.0/3.4 mm
- 4.5″ × 4.5″ × 3.0/3.4 mm
- Material: stainless steel (SS304/201)
- Design: dual flat leaves; internal spring mechanism; precision knuckle/pin; template screw layout
- Finishes: Satin Stainless (SSS), Polished Stainless (PSS), Antique Brass (AB), Antique Copper (AC), PVD
- Applications: room doors and wooden gate doors; residential/light commercial
- Highlights: automatic one‑way closing, minimalistic look, quiet operation, long service life, easy alignment
