Spra-Cube SE Medium Efficiency Paint Arrestors

Name: SE Medium Efficiency
Brand: RTT Finishing Solutions

Extended-Surface Cube Filter. Maximum Holding Capacity.

The RTT Spra-Cube SE Series is a medium efficiency, high holding capacity extended-surface cube filter designed for high-volume finishing applications where maximizing service intervals between filter changeouts is the primary requirement. Unlike flat blanket arrestors, the Spra-Cube’s three-dimensional extended-surface cube geometry (20″ × 20″ × 15″) dramatically increases the effective filter media surface area within the same booth frame footprint — resulting in a paint holding capacity of 3,941 grams (8.7 lb.), more than double that of the W-Series flat pad filters. Independent testing by LMS Technologies, Inc. confirmed an average removal efficiency of 98.81% under standard test conditions.

The Spra-Cube SE Series achieves the lowest initial pressure drop in the Spra-Cube lineup at 0.02 in. wg on a clean filter, rising to just 0.03 in. wg at full load — an exceptionally narrow pressure differential that keeps fan load nearly constant throughout the entire service life of the filter. Constructed from multiple layers of RP’s proprietary paper Paint Arrestor media and synthetic backings, the Spra-Cube SE Series is positioned as the economical choice within the Spra-Cube family for operations that coat in high volume and require medium capture efficiency.

Features

Extended-surface cube design: 20″ × 20″ × 15″ three-dimensional geometry
Multiple layers of RP proprietary paper Paint Arrestor media with synthetic backings
Initial pressure drop (clean filter): 0.02 in. wg
Final pressure drop (loaded filter): 0.03 in. wg
Paint holding capacity: 3,941 grams = 8.7 lb.
Average removal efficiency: 98.81%
Designed for high-volume, medium efficiency finishing applications
Most economical option in the Spra-Cube lineup
Tested by LMS Technologies, Inc.

Benefits

Reduce filter changeout frequency in high-volume operations – the 8.7 lb. paint holding capacity is more than double the holding capacity of W-Series flat pad filters, extending service intervals significantly on busy finishing lines.
Minimize fan load variation throughout the filter’s service life – the pressure differential between a clean (0.02 in. wg) and fully loaded (0.03 in. wg) filter is the narrowest in the Spra-Cube lineup, keeping airflow and fan performance nearly constant.
Lower the cost per changeout on high-volume lines – the SE Series is the most economical option in the Spra-Cube family, suited for operations that prioritize holding capacity over maximum capture efficiency.
Fit the same booth frame as flat blanket arrestors – the cube geometry installs in the standard exhaust filter bank without structural modification.

Test Data

Performance testing was conducted by LMS Technologies, Inc. under the following conditions:

Test Parameter	Value
Paint Description	High Solids Baking Enamel (S.W. #1 Permaclad 2400, red)
Paint Spray Method	Conventional Air Gun at 40 PSI
Spray Feed Rate	143 grains/min. (135 cc./min.)
Air Velocity	150 FPM
Initial Pressure Drop (Clean Filter)	0.02 in. wg
Final Pressure Drop (Loaded Filter)	0.03 in. wg
Paint Holding Capacity	3,941 grams = 8.7 lb.
Average Removal Efficiency	98.81%

Testing conducted by LMS Technologies, Inc.

Spra-Cube Series Comparison

All three Spra-Cube models share the same 20″ × 20″ × 15″ extended-surface cube geometry and fit the same booth frame without structural modification. Choose based on your efficiency requirements and coating type.

Specification	Spra-Cube SE Medium Efficiency	Spra-Cube HE High Efficiency	Spra-Cube UE Ultra Efficiency
Performance
Avg. Removal Efficiency	98.81%	99.41%	99.48%
Paint Holding Capacity	3,941 g / 8.7 lb.	3,941 g / 8.7 lb.	3,798 g / 8.3 lb.
Pressure Drop
Initial (Clean Filter)	0.02 in. wg	0.05 in. wg	0.05 in. wg
Final (Loaded Filter)	0.03 in. wg	0.06 in. wg	0.09 in. wg
Pressure Differential	0.01 in. wg	0.01 in. wg	0.04 in. wg
Physical
Cube Dimensions	20″ × 20″ × 15″	20″ × 20″ × 15″	20″ × 20″ × 15″
Construction	Multi-layer RP paper + synthetic backings	Multi-layer RP paper + synthetic backings	Multi-layer RP paper + synthetic backings
Booth Frame Compatible	Yes	Yes	Yes
Best For
Ideal Application	High-volume lines where maximum holding capacity and lowest cost per changeout is the priority	High-volume lines requiring above-average efficiency without sacrificing service interval length	High-volume systems using paints and coatings that are difficult to filter with standard products

“In my opinion, the most important thing to consider when buying equipment is having a partner who can get the job done. Anyone can sell you something, but RTT had the willingness to make sure it all came together and did exactly what we needed it to do.”

“RTT provided the right-side downdraft solution and saved us significant costs by eliminating the need for an in-ground pit. The booth has performed great, and our painters are very happy with it.”

“Our plant will enjoy increased output, less rework, improved drying times, fewer delays and fewer defects, while helping to create a highly efficient and employee-friendly workplace.”

3000 Standard

The 3000 Standard RP Arrestor Series offers reliable overspray capture for general coating applications - compatible with multiple spray methods and built with eco-conscious, degradable materials.

3100 Standard High Capacity

The 3100 Standard High Capacity RP Paint Arrestor Series is built for high-production environments and compact booths - optimized for heavy, tacky coatings and slower-drying finishes.

3200 Spra-Gard High Efficiency

The 3200 Spra-Gard High Efficiency RP Arrestor Series provides durable, single-stage overspray capture for most applications with a polyester-backed design. Available in pads or rolls.

3300 Spra-Gard High Efficiency

The 3300 Spra-Gard High Efficiency RP Arrestor Series offers peak overspray capture with high-density polyester backing, delivering superior, single-stage performance for most applications.

3400 Spra-Gard High Capacity High Efficiency

The 3400 Spra-Gard High Capacity High Efficiency RP Arrestor Series delivers peak efficiency and extended service life - purpose-built to reduce downtime in high-production environments.

3600 Spra-Gard High Capacity High Efficiency

The 3600 Spra-Gard High Capacity High Efficiency RP Arrestor Series delivers 3200 Series efficiency with extended filter life, engineered for high-production operations where uptime is critical.