Series FDC 420 Door Closer – Smooth Closing & Adjustable Control for Commercial Doors

Product Overview

The Series FDC 420 Door Closer delivers smooth, controlled door operation and is engineered for commercial-grade performance. With Grade 1 certification, this closer is designed for heavy-duty use and is UL/ULC listed, making it ideal for fire-rated doors (UL 10C Certified, 3-hour rating).

Built for versatility, it supports door widths up to 1400 mm and door weights from 40–150 kg. It features adjustable closing speed (two-stage adjustment) and optional delay action function, allowing precise control over closing force and timing.

Durability is unmatched — the FDC 420 has successfully passed 2,000,000 cycle tests, ensuring reliable performance even in high-traffic commercial settings.

Key Features

• Grade 1, UL/ULC listed, UL 10C certified for use on fire-rated doors (3-hour rated)

• Supports doors up to 1400 mm wide and weighing 40–150 kg

• Two-speed closing adjustment for controlled door operation

• Optional delay action and hold-open functions for added convenience

• 180° maximum opening angle for full accessibility

• Works for both left- and right-hand doors

• Operates in extreme temperatures from -30°C to 60°C

• Tested for 2,000,000+ cycles for long-lasting reliability

• Custom finishes available to match your design

Technical Specifications

• Main Body Dimensions: 268 mm (L) x 44.5 mm (W) x 72 mm (H)

• Door Width (Max): 1400 mm

• Door Weight Range: 40–150 kg

• Weight: 4.35 kg

• Closing Speeds:

  • Speed 1: From max open angle to 10°

  • Speed 2: From 10° to closed position

Ideal Applications

• Commercial buildings

• Schools and universities

• Hospitals and healthcare facilities

• Industrial doors

• Fire-rated door assemblies

Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.