Signature 4 supplies apparatus manufacturers with NFPA-compliant components that perform in the field — from SCBA compartments to operator panels — delivered turnkey from a single U.S.-based partner.
Your component partner for fire apparatus manufacturers.
EXTERNAL + INTERNAL APPARATUS COMPONENTS
Trusted by 150+ Fire Industry Customers
15+
Years in Fire Apparatus
12+
Year FAMA Member
NFPA
Compliant
They left with a better one.
Sutphen's team was handling their engine cover in-house — it worked, but it pulled resources and introduced inconsistency. Signature 4 developed a turnkey component that improved fit, finish, and repeatability while removing the burden from their production line entirely.
Sutphen came to us with an in-house process.
CASE STUDY
Still Running
Ongoing partnership. A better product, one less thing to manage, and a supply chain they can count on
The Result
In-House Process
Time-consuming, inconsistent results, pulling production resources away from core apparatus work
THE CHALLENGE
Turnkey Component
Signature 4 handled design, production, and delivery — ready to install, spec-matched, repeatable
The Solution
SCBA Compartments
1–4 bottle configs. Retro-fit ready. 304 SS hardware with poly interior surfaces.
Fuel Doors
HDPE or stainless enclosures. Magnetic or push-button latch. Quick installation.
Folding Steps
NFPA 1901 compliant. LED lit. Tested to 1,000 lbs and 10,000 cycles.
Grab Rails
Non-corrosive SS. Standard 8.5"–60". Knurled, brushed, or polished finish.
Expandable Steps
Three ergonomic handle points. Custom width. Safety reflectors + LED option.
Operator Panels
Interior + exterior. Plug-and-play harness assemblies. Etched graphics + backlighting.
Logos, Badging & Plaques
OEM badges, dedication plaques, SS tags, bezels, and caution labels. NFPA compliant.
Valve Controls
Santoprene over-mold grip. Custom labeling inserts. SC1 chrome plating.
Custom
Don't see what you need? Every product category accepts custom configurations and one-off solutions.
Signature 4 built the Oil Dry Hopper because nobody else had. It solves a real, documented pain point for heavy rescue vehicles — managing absorbent materials cleanly and efficiently on scene. There's still no direct competitor equivalent. If your rescue builds are missing a smarter solution for oil dry, this is it.
The Only Hopper Designed for Heavy Rescue
product spotlight
Meet the Sales Leaders
Real People. Real Solutions.
Download Fire & Rescue Resources
FIRE CATALOG
03
02
All Fire & Rescue Products
VALVE CONTROLS
EXPANDABLE STEPS
OPERATOR PANELS
LOGOS, BADGING, PLAQUES
GrAB RAILS
FOLDING STEPS
SCBA COMPARTMENTS
FUEL DOORS
DOWNLOAD ALL SPECS
GET A QUOTE
01
More Fire & Rescue Product
VALVE CONTROLS
EXPANDABLE STEPS
OPERATOR PANELS
LOGOS, BADGING, PLAQUES
GrAB RAILS
SCBA COMPARTMENTS
FUEL DOORS
FOLDING STEPS
