An Office Admin’s 4-Step Purchasing Checklist: Drywall, Murphy Doors, Garage Openers & Cover Letters

Office administrator for a 150-person company. I manage all building maintenance and office supplies ordering—roughly $200,000 annually across 8 vendors. I report to both operations and finance. When I took over purchasing in 2020, I quickly learned that a systematic checklist saves time, money, and embarrassment. Here's the 4-step checklist I use for the most common non-IT purchases that cross my desk.

When to Use This Checklist

If you're the person responsible for buying construction materials for office renovations, specialty hardware like Murphy doors, garage door opener remotes for company vehicles or storage units, or you need to request formal quotes from vendors—this is for you. I've organized it into four action steps. Follow them in order, but feel free to skip steps that don't apply.

Step 1: Ordering USG Drywall Materials (Joint Compound & Tape)

Goal: Get the right USG Sheetrock brand joint compound and tape the first time, without delays.

• Confirm product codes. USG Sheetrock 4.5 gallon Plus 3 joint compound is our go-to. Its code is 380060. USG tape usually comes in rolls of 500 feet—code 907100. Never assume 'same specifications' across vendors. I learned that after ordering 'equivalent' compound that had a different drying time. (Should mention: we always stick with USG-branded because the setting time is predictable for our crew.)
• Inspect packaging on delivery. Joint compound buckets can dent in transit. A dented lid means air exposure—and a ruined batch. We didn't have a formal inspection process. Cost us when an unauthorized dented bucket showed up on the invoice and we had to reorder. Now I include a visual check on the receiving checklist.
• Verify batch numbers. If you're ordering large quantities (say, 20 buckets), make sure all have the same batch number—otherwise you'll get slight color or performance variations. The third time we mixed different batches and got uneven texture, I finally created a batch verification step.

One common mistake: assuming the tape you used last time is still in stock. USG tape can backorder during drywall season. I always ask for lead time before placing the order.

Step 2: Sourcing a Murphy Door

Goal: Buy a hide-away door (often used to conceal a closet or utility room) that fits both the opening and the design intent.

• Measure the rough opening. Murphy doors are custom-sized. I assumed 'standard' dimensions would fit our 30x80 opening. Didn't verify. Turned out the door needed a 31x81 rough opening. That mistake cost us a return fee and a week delay. Now I always ask the supplier for their required rough opening dimensions before ordering.
• Decide on finish. Murphy doors come primed, painted, or with a veneer. Most contractors prefer primed so they can paint on-site. But if you order pre-finished, verify the color code.
• Check hardware compatibility. Some Murphy doors use a concealed hinge system, others a pivot. Our maintenance crew had only installed pivot hinges before. The first door we ordered had a concealed system—nobody could install it. (Should mention: I now send the installation manual to our facilities team before purchase.)

Learned never to assume 'easy install' means universal—after that pivot-hinge nightmare.

Step 3: Buying Garage Door Opener Remotes

Goal: Replace or add remotes for company vehicles or storage garage doors without compatibility headaches.

• Identify the opener model and frequency. Most modern openers use 315 MHz or 390 MHz. Some newer ones are rolling-code. I assumed all 'universal' remotes work with any opener. Didn't verify. A $20 universal remote didn't pair with our LiftMaster 8500W. Wasted 2 hours troubleshooting.
• Program before installing. Follow the owner's manual instructions exactly. Many remotes require pressing a 'learn' button on the opener motor unit. If you can't access the motor unit (e.g., it's mounted high), call a technician—or ask a facilities guy with a ladder.
• Buy from a reputable source. I saw cheap remotes on Amazon with 'works with all openers.' They didn't. Stick with OEM or known brands like Chamberlain, LiftMaster, or Genie. Our garage door supplier gave us a list of compatible models—saved us pain.

One thing most people overlook: check if the remote needs a battery and whether it's included. The remote we bought didn't have a battery, and we had to run to the store. Small but annoying.

Step 4: Understanding & Using Cover Letters in Procurement

Goal: Know what a cover letter is (in a purchasing context) and when to request one from vendors.

Why does this matter? Because cover letters aren't just for job applications. In procurement, a cover letter often accompanies a Request for Proposal (RFP) response or a formal quotation. It's a one-page summary that explains the vendor's understanding of your needs, their value proposition, and any exceptions to your specifications.

• When to request a cover letter: For high-value purchases (over $5,000), or when you need the vendor to demonstrate they understand your project. It forces them to be specific. The question isn't 'do you offer cover letters?'—it's 'what are you committing to?'
• What to look for: The cover letter should mention your company name, the project reference, key deliverables, pricing validity period, and any deviations from your requirements. If it's generic—cut and paste from another client—that's a red flag.
• How to ask for one: Simply say, "Please include a brief cover letter with your proposal outlining how your solution meets our specifications and any assumptions you've made." I'd rather spend 10 minutes explaining this than deal with mismatched expectations later. An informed supplier asks better questions and delivers faster.

Avoid the trap of thinking a cover letter is unnecessary red tape. When we switched to requiring cover letters for orders over $10,000, our accounting team saved 6 hours monthly—because all the terms were clearly stated upfront. (Oh, and it eliminated the 'I thought you meant something else' conversations.)

Final Reminders & Common Pitfalls

• Batch consistency for USG materials: If you order across multiple months, request the same batch number—or at least mix batches using the 'three bucket shuffle' method (mix small amounts first to test compatibility).
• Murphy door returns: Most are custom-made and non-returnable. Double-check everything before hitting 'buy'.
• Remote compatibility: Ask your garage door opener manufacturer for a list of tested remotes. I learned that after buying two incompatible ones.
• Cover letters aren't contracts: But they're a useful starting point. Always follow with a formal purchase order that overrides any conflicting terms.
• Always confirm lead times. This worked for us, but our situation was a mid-size office with predictable ordering patterns. If you're a seasonal business with demand spikes, the calculus might be different.

Not every step will apply to every purchase. But having a checklist means you won't forget the things that cost time, money, and credibility. Exactly what we needed.