Mercury A-172-1: 21" Apron with Bumper for BOSS Floor Machines
The A-172-1 is a 21" replacement apron with integrated bumper for Mercury BOSS-1 and BOSS-2 floor machines. It weighs 6 lbs and installs with three thumb screws, making it interchangeable with the 13", 15", 17", and 19" apron sizes without tools. The 21" apron is the widest available in the BOSS apron series, covering more floor per pass in open areas where machine width is not a constraint.
A-172-1 Specifications and Compatibility
Model: A-172-1
Apron size: 21 inches — widest in the BOSS apron series
Weight: 6 lbs — heaviest in the series due to the larger apron deck
Bumper: Non-marking perimeter bumper — prevents contact damage to walls and baseboards during operation
Installation: Three thumb screws — tool-free removal and installation
Compatible machines: Mercury BOSS-1 and BOSS-2 Heavy-Duty Floor Machines only
Choosing the 21" Apron Width for BOSS Machine Operations
The BOSS machine's apron-swap system allows operators to change cleaning width without switching machines — swapping from a 13" to a 21" apron in the same shift using three thumb screws. The 21" apron is the correct selection for open areas: hotel lobbies, school gymnasiums, warehouse floors, and large retail spaces where the operator can run straight passes without needing to navigate furniture, fixed equipment, or tight corners. In these zones, 21" covers more square footage per pass than the 17" or 19" aprons, reducing total pass count and cleaning time. The non-marking bumper is relevant in the 21" apron because the wider machine has less side clearance in most corridors — contact with walls is more likely than with narrower aprons, and the bumper prevents marking.
Bumper Design and Installation Mechanism
The perimeter bumper on the A-172-1 is made from non-marking material that absorbs contact energy without transferring color or finish to wall surfaces. It sits proud of the apron edge, intercepting contact before the apron body can reach the wall. This is particularly relevant during direction changes and when operating near wall-floor junctions, where the operator's attention is on the pad path rather than the apron edge. The three-thumb-screw installation allows apron changes in under two minutes without removing the machine from service — the operator removes the current apron by loosening the three thumb screws, positions the new apron, and tightens. The mounting interface is the same across all BOSS apron sizes, so the A-172-1 mounts to the same receiver points on the BOSS-1 and BOSS-2 as the 13", 15", 17", and 19" aprons.
Specification
Value
Model
A-172-1
Apron Size
21 inches
Weight
6 lbs
Bumper
Non-marking perimeter bumper
Installation
3 thumb screws (tool-free)
Compatible Machines
Mercury BOSS-1, BOSS-2
Manufacturer's Warranty
This product comes with a full manufacturer's warranty. All warranty claims are handled directly by the manufacturer.
For specific warranty details, please contact us at +1 (978) 295-7538 or email info@uscleaningtools.com
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We supply contractors, restoration companies, property managers, schools, government agencies, and other tax-exempt organizations.
How to place a tax-exempt order:
Write to us through our Contact Us page or email info@uscleaningtools.com and attach your valid tax exemption certificate (state resale or exemption certificate).
We verify your certificate and mark your account tax-exempt — usually within one business day.
Place your order and sales tax will not be charged.
For volume pricing or purchase orders, call +1 (978) 295-7538.
Shipping & Returns
Free shipping on most brands for orders over $300, delivered to the lower 48 states. Any brand-specific freight rate is shown at checkout before you pay.
Processing & delivery: in-stock orders are processed within 1–2 business days and typically deliver in 5–7 business days. Tracking is emailed within 24 hours of shipment. Built-to-order and backordered equipment shows its lead time on this page.
Freight deliveries: inspect your equipment on arrival and note any damage on the delivery receipt. Items damaged in transit or defective on arrival are fully covered at no cost to you.
Cancellations: cancel any time before your order ships for a full 100% refund.
30-day returns: return unused equipment in its original packaging within 30 days of delivery. Change-of-mind returns are subject to a restocking fee. To start a return, email info@uscleaningtools.com or call +1 (978) 295-7538.
Added to cart
Mercury Floor Machines A-172-1 BOSS Floor Machine Apron –...
Frequently bought with the Mercury Floor Machines A-172-1 BOSS Floor Machine Apron – 21", 6 lbs, with Bumper
Added to your order — shipped together.
Frequently Asked Questions
Which BOSS machines is the A-172-1 apron compatible with?
The A-172-1 21" apron is designed for Mercury BOSS-1 and BOSS-2 Heavy-Duty Floor Machines. It is not compatible with Hercules, Lo-Boy, or other Mercury floor machine series — those machines use different apron mounting systems.
How does the 21" apron compare to the 19" apron (A-171-1) on the same BOSS machine?
The 21" apron covers 2 additional inches of floor width per pass compared to the 19" apron (A-171-1). Both weigh 6 lbs and use the same three-thumb-screw installation. The 21" apron is more efficient in wide-open areas; the 19" apron fits through narrower doorways or service corridors that the 21" model cannot pass.
Can I swap aprons mid-shift between different widths?
Yes. The BOSS machine's three-thumb-screw system allows apron changes in under two minutes without tools. Operators running open floor areas with the 21" apron can switch to the 13", 15", 17", or 19" apron for corridor or detail work and switch back, all with the same BOSS machine body.
Does the 21" apron include a pad driver?
No. The A-172-1 is an apron assembly only — the apron deck, bumper, and thumb screws. Pad drivers are purchased separately in the appropriate size for the task. Verify the pad driver size compatible with the 21" apron from Mercury's parts list for the BOSS machine.
What surfaces is the 21" BOSS apron suitable for?
The A-172-1 apron is compatible with scrubbing, stripping, and polishing applications on stone, tile, VCT, carpet (with appropriate pad), and sealed hardwood floors. The appropriate floor pad or brush for each surface must be selected separately. The apron itself does not determine surface compatibility — the pad type does.
Frequently Asked Questions
1. What payment methods can I use?
We accept Visa, MasterCard, American Express, Diners Club, Discover, major debit cards, and digital wallets like PayPal, Google Pay, Meta Pay, and Apple Pay.
2. When will my payment be processed?
Your credit/debit card or PayPal account will be charged when you place your order. Secure payment processing protects your information.
3. Will I receive an order confirmation?
Yes, a confirmation email will be sent to the provided email address once the order is placed.
4. How long does it take to process an order?
Orders are processed within 1-2 business days and then prepared for shipment.
5. How long does it take for my order to arrive?
Estimated arrival time (ETA) is 5-7 business days for all orders.
6. Do you offer warranty?
All our products come with a manufacturer warranty of at least 1 year, depending on the brand.
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