The EDCO C90300 is a 30-inch epoxy screed box - the same tool concrete and resinous-floor contractors use to lay epoxy mortar, self-leveling underlayment, and decorative quartz floors at consistent thickness across long pulls. Specialty flooring contractors, industrial maintenance crews, and warehouse build-out teams order this box because the alternative - hand-troweling a 1.9 cubic foot batch of fast-setting epoxy mortar - is a recipe for thickness variation, lap lines, and rework.
Why this screed box works: The aluminum frame matters in two ways. First, it doesn't rust when wet sand-and-cement materials sit in the hopper between pours, so the box has a long service life. Second, aluminum is light enough that two crew members can lift the empty box onto a clean substrate, but heavy enough loaded that the box tracks straight without bouncing on aggregate. The six adjustable legs are the key feature: contractors set leg height to the desired finished mil thickness (typically 1/4 to 3/8 inch for epoxy mortar floors), and the box self-levels as the crew rolls it forward. Crews accustomed to hand-screeding consistently report that switching to a screed box cuts pour time in half and produces a flatter floor that doesn't need surface grinding before the topcoat.
Specifications
- Width: 30 inches
- Hopper capacity: 1.9 cu/ft
- Frame: Aluminum
- Legs: Six adjustable height-leveling legs
- Handles: Two operator handles for two-person rolling
- Lead time: Made to order; ships in 5-7 business days
Built for these jobs
- Epoxy mortar floors in food-processing plants, breweries, and pharmaceutical manufacturing.
- Decorative quartz and chip-broadcast systems in retail and showroom environments.
- Self-leveling underlayment on warehouse and distribution-center floors before final topcoats.
- Industrial overlays on parking-deck and mezzanine floors.
- Cementitious urethane systems in cold-storage and wash-down kitchen environments.
Frequently asked questions
What thickness does this box screed?
Leg height is fully adjustable. Most epoxy mortar systems screed at 1/4 to 3/8 inch (6 to 10 mm). Self-leveling underlayment is typically thinner. Set legs to the manufacturer's recommended thickness for your specific resin or polymer system.
Is this box compatible with all epoxy mortars?
The C90300 is a general-purpose screed box. It works with most aggregate-loaded epoxy mortars, polymer underlayments, and quartz-broadcast systems. Always check pot life - if the resin sets in under 20 minutes, plan crew size and section length accordingly.
How do I clean the hopper between batches?
Empty residual material immediately at the end of each pour. For epoxy systems, scrape the hopper while the resin is still soft and rinse with the recommended solvent before it cures. Cured epoxy in an aluminum hopper is hard to remove without damaging the frame.
What's the production rate?
Production depends on crew size, mix-cycle time, and resin pot life. Two-person crews with a continuous mixer routinely lay 800-1,500 sq ft per hour at 1/4 inch with this box.
Is a 36-inch version available?
Yes. EDCO also manufactures a 36-inch screed box. The 30-inch is more maneuverable in tight spaces; the 36-inch is faster on long open pulls. Contact us if you need both.
Why buy from Discount Cleaning Products
We are an authorized EDCO dealer and stock the full screed-box line. The C90300 is a made-to-order item with a 5-7 business day lead time. Order early to align with your pour schedule, and our team can help match the right screed box to your resin system.