Spra-Cube HE High Efficiency Paint Arrestors

Name: HE High Efficiency
Brand: RTT Finishing Solutions

High Efficiency Cube Filter. Maximum Holding Capacity.

The RTT Spra-Cube HE Series is a high efficiency, high holding capacity extended-surface cube filter for high-volume finishing applications that require higher-than-normal removal efficiency without sacrificing service interval length. Using the same 20″ × 20″ × 15″ cube geometry as the SE Series, the HE steps up to Version 2 of the 2-Pocket RP Cube design – delivering a significant jump in average removal efficiency to 99.41% while maintaining the same 3,941 gram (8.7 lb.) paint holding capacity as the Spra-Cube SE series. Independent testing by LMS Technologies, Inc. confirmed these results under standard test conditions.

The HE Series achieves a low initial pressure drop of 0.05 in. wg on a clean filter — low compared to other high-efficiency overspray cubes – rising to just 0.06 in. wg at full load. This near-flat pressure curve means fan load and airflow remain consistent from the first hour of service to the last. Like all Spra-Cube filters, the HE is constructed from multiple layers of RP’s proprietary paper Paint Arrestor media and synthetic backings.

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): 0.05 in. wg
Final pressure drop (loaded filter): 0.06 in. wg
Paint holding capacity: 3,941 grams = 8.7 lb.
Average removal efficiency: 99.41%
Designed for high-volume applications requiring higher-than-normal removal efficiency
Tested by LMS Technologies, Inc.

Benefits

Achieve higher capture efficiency than the Spra-Cube SE Series without reducing holding capacity – the HE delivers 99.41% average removal efficiency while maintaining the same 8.7 lb. paint holding capacity as the SE.
Maintain consistent airflow from first use to filter replacement – the pressure differential between clean (0.05 in. wg) and fully loaded (0.06 in. wg) is the narrowest in the high-efficiency cube category, keeping fan performance nearly constant.
Reduce filter changeout frequency in high-volume operations – the 8.7 lb. paint holding capacity extends service intervals significantly compared to flat blanket pad filters.
Meet higher-than-normal removal efficiency requirements without switching to a flat pad filter – the HE cube delivers high efficiency in the same extended-surface geometry as the SE.
Fit the same booth frame as the SE – the 20″ × 20″ × 15″ cube dimensions are identical to the Series SE, allowing direct substitution 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)	0.05 in. wg
Final Pressure Drop (Loaded Filter)	0.06 in. wg
Paint Holding Capacity	3,941 grams = 8.7 lb.
Average Removal Efficiency	99.41%

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.