Model: SAHB
2 Stage Filtration: Pre Filters & HEPA Filters

Bolt-Lock HEPA Air Filter Housing Overview:

Air Filters, Inc. "Bolt-Lock" HEPA housings (SAHB's) are designed for final OR two stage filtration. Each housing shall accommodate a 2” OR 4” (optional) deep pre-filter and a 12" deep box style HEPA filter. Air Filters, Inc. offers three standard housing depths, 22-1/4", 26-1/4", and 28-1/4".

The Air Filter, Inc. "Bolt-Lock" HEPA filter locking assembly is designed for sealing integrity easy filter change. Filters can be loaded from both sides on housing over 1 wide. The Bolt-Lock consists of four positive pressure swing arms with spring-loaded clip locks that apply pressure on the filter by compressing the gasket against the filter's frame, keeping the filter tightly sealed. Units are factory assembled in a "one-piece rugged construction," and reinforced with corner gussets to add extra stability. Each unit is supplied with 1" flanges on the entering and leaving sides of the housing for easy installation to the duct and air handling systems. Access doors shall be fully gasketed around the perimeter with a closed cell neoprene gasket to ensure an air tight seal when closed. A closed cell urethane foam is included on the inside of doors and walls to seal against the filter edge to eliminate air by-pass. After fabrication units shall be sealed with a silicone compound on areas where metal meets metal, assuring a sealed housing.

Air Filters, Inc. offers optional construction on the SAHBs including metal type, special flanged, insulation, weatherproofing, custom sizes, and any specified construction applications.

Standard Construction:

Sizes: Available sizes start from 1/2 high x 1/2 wide and range up to 4 high x 6 wide.
Cabinet: 14 gauge galvanized steel.
Filter Rack: Extruded aluminum filter track with integral nylon pile seal. Track will accommodate a 2" deep filter.
Finish: Mill finish interior and exterior.
Access door: One hinged door is provided on housings 1 wide. Two hinged access doors will be provided on housings 1-1/2 wide and over. Access doors are fitted with positive pressure knurl knob latches. Door perimeters are sealed with a closed cell neoprene gasket. Urethane foam (two-pound density) is installed around the inside of doors to ensure a tight seal on filters.
Reinforcement: Vertical supports on units 2 wide and over are proved typically on every 24" centers. Corner gussets are also provided for rigidity.

Optional Bolt-Lock Filter Housing Items:

Add any of these housing filter options with Air Filters, Inc.

• 4"Filter Track: Extruded aluminum track shall accommodate a 4" deep filter.
• Gel Seal Framing System: Please contact factory with knife edge dimensions.
• 304 Stainless Steel Construction: Housing and filter track shall be constructed of min. 16 gauge up to 12 gauge.
• Weatherproofing: Includes pitched roof and rain guards over each door. All flanges will be "turned-in," width will be 2" narrower and height will gain 1" overall.
• Insulation: Single wall insulation is available. Insulation shall be 1" thick (3.0 pcf density) rigid fiberglass duct board with (FSK) foil backing. Contact factory for other types and thickness.
  Double wall insulation is available. Insulation shall be 1" thick (1.5 pcf density) fiberglass duct liner sandwiched between the outer and a 20 gauge inner liner.
• Epoxy Coating: Air-dried epoxy coating is applied on the interior and exterior of housing. Standard is grey, contact factory for other colors.
• High Pressure: High negative and positive pressure construction is available. Construction includes additional bracing to reinforce housing.
• High Temperature: Special silicone and gaskets are used for temperature applications. Please contact factory.
• Custom Sizes: Please contact factory for custom housing sizes.
• Special Flanged: Housing are available to match any duct or AHU.
• Vertical Flow: Please contact factory.

Contact us for sizes and a price quote.

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