What hardener should be used for what temp? Slow for hight temp fast for low temp?

Hardener Selection Chart FH611 (Fast Hardener): 55°-75°F FH612 (Medium/Standard Hardener) 70°- 90°F FH613 (Slow Hardener) 85°F and above

Can this be used on head lights?

I’m not sure I agree, I have been doing headlights in my downtime using High Solids Urethane Enamel for years and cars I did three years ago look good

What is the mix ratio?

Hello! Mixing ratio 4 parts clearcoat 1 part activator. Thank you!

Can this clear be mixed with another 4:1 acrylic clear brand?

I wouldnt advise mixing different brands together.

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Description

✨ Elevate your finish game with Sherwin-Williams’ ultimate clearcoat brilliance!

PRECISION MIXING RATIO - Optimized 4:1 mix ratio with slow hardener for controlled curing and maximum finish durability.
VERSATILE DRYING OPTIONS - Performs flawlessly in both air dry and force dry environments—flexibility that fits your workflow.
SEAMLESS BLENDING BUFFING - Engineered for smooth leveling and effortless blending, ensuring flawless repairs every time.
UV WATER RESISTANT SHIELD - Protects your surfaces with fast-drying, UV-resistant technology for long-lasting brilliance.
GLOSS THAT COMMANDS ATTENTION - Delivers a brilliant, showroom-quality gloss and depth of image (DOI) that makes your work stand out.

Sherwin-Williams Finish 1 Ultimate Overall Clearcoat FC720 is a high-solids urethane clearcoat designed for professional-grade repairs. It offers exceptional gloss, depth, and leveling with a 4:1 mix ratio and slow hardener for controlled drying. Suitable for both air and force dry applications, it provides UV and water resistance, making it ideal for durable interior and exterior finishes.

Specifications

Brand	SHERWIN WILLIAMS
Color	Ultimate Overall Gloss
Finish Type	Gloss
Size	1 Count (Pack of 1)
Item Volume	1 Gallons
Special Feature	Fast-Drying, UV Resistant
Unit Count	1 Count
Paint Type	Acrylic
Specific Uses For Product	Interior/Exterior
Surface Recommendation	acrylic
Item Form	Aerosol
Model Name	Finish 1TM Ultimate Overall Clearcoat FC720
Package Information	Can
Coverage	1
Water Resistance Level	Water Resistant
UPC	029316010138
Manufacturer	Sherwin-Williams
Item Weight	11.03 pounds
Package Dimensions	10.25 x 7.65 x 6.55 inches
Is Discontinued By Manufacturer	No
Exterior	Gloss
Manufacturer Part Number	FC720
Special Features	Fast-Drying, UV Resistant

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