How to Specify a Freezer High Speed Door: Buyer RFQ Checklist

A freezer high speed door (also called a cold storage high speed door, high speed freezer door, or cold room high speed door) is a rapid roll-up door built for chilled and frozen openings with frequent forklift traffic. Insulation in the curtain and anti-freeze heating in the guides matter as much as open speed: every extra second the opening stays open adds infiltration, frost risk, and energy cost.

This page is a how-to-specify / RFQ checklist. It complements LESHO’s freezer high speed door buyer FAQ and price guide. It does not repeat a long Q&A list. Use it when you are writing a tender package, comparing China factory-direct offers, or preparing drawings for quotation.

Manufacturer: Zhengzhou Lesho Door Co., Ltd. (LESHO). Shanghai is a sales office only.

Product page: freezer high speed door.

1) Decide if a freezer high speed door is the right product

Choose a freezer / cold storage high speed door when:

• The opening is crossed many times per hour (forklifts, pallet trucks, mixed traffic).

• Short open time is the main energy and throughput lever—not maximum overnight insulation alone.

• You need an insulated curtain plus heated guides so side rails do not ice up under cold duty.

Choose (or add) a sliding cold storage door when:

• Traffic is low and you need a thick insulated leaf for long closed periods.

• You want a night seal after daytime rapid traffic (many sites run both: high-speed by day, sliding by night).

Browse related ranges under Cold Storage Door and High Speed Door.

2) Spec block LESHO publishes for the freezer model (use in RFQs)

When you write “compatible with LESHO freezer high speed door,” align the line items with the current product page / MIC catalog figures:

Do not copy temperature or max-size numbers from outdated third-party B2B listings if they disagree with the manufacturer’s current sheet.

3) How-to-choose: five decisions before you price shop

A. Temperatures on both sides of the opening

State room set-points (cold side and warm / dock side), humidity if known, and whether the door faces a blast freezer, chill room, or vestibule. LESHO’s MIC working range for this model is −35°C to 65°C. Still put the real project temperatures in the RFQ so sales can confirm suitability, condensation risk, and heater duty.

B. Clear opening width × height and headroom

Measure the clear opening the curtain must cover, plus available lintel / side room for guides and the roll barrel. Large openings up to the published max class (about 6000 × 6000 mm) change motor, curtain packing, and packing crate size—do not assume a small-door price scales linearly.

C. Cycles per day and traffic type

Estimate openings per day and who triggers the door (forklift only, mixed pedestrian, AGV). High cycle counts drive motor and control selection. Soft bottom edge and photocells are the usual safety baseline; radar (or loop / pull cord / remote) is selected from the traffic pattern.

D. Insulation vs open-time trade-off

An insulated high speed door (~30 mm sandwich curtain on the LESHO freezer model) cuts heat gain while traffic passes. It is not a substitute for a heavy sliding leaf left closed overnight. Write that pairing into the RFQ if your energy model assumes a night seal.

E. Commercial terms that must appear on the PI

Factory-direct offers should spell out: Incoterms (often FOB for China export), warranty (1 year on LESHO’s standard line), lead time (15–20 days typical after drawing confirmation), spare-curtain / heater lead times, and whether installation is local or buyer-arranged. For cost context (FOB bands vs US installed ranges), see the freezer high speed door price guide—treat published bands as reference, not a locked cart price.

4) Copy-paste RFQ checklist (send with drawings)

Email info@leshochina.com or call +86-15851675955 with:

1. Clear opening width × height (mm) and photos or CAD of the reveal

2. Temperatures on both sides of the opening; humidity if known

3. Expected cycles per day; forklift / pedestrian / AGV mix

4. Site power (voltage, phases, frequency)

5. Preferred activation: radar / loop / remote / pull cord

6. Indoor partition vs dock-facing opening; wind or wash-down notes if any

7. Quantity, destination country, preferred Incoterms

8. Whether you also need a sliding cold-room door for night seal

9. Any local code or certificate file you must receive before shipment

LESHO can customize curtain options, vision panels, and controls per project. Ask for a free quote—factory-direct from Zhengzhou Lesho Door Co., Ltd.

5) Common RFQ mistakes (and how to avoid them)

• Mixing FOB door price with installed US/EU project cost. Separate equipment, ocean freight, duty, and local install. Use the price guide for structure, then request a LESHO PI for your size.

• Omitting warm-side temperature. Ice forms where cold air meets warm humid air at the guides—heated rails need the full temperature story.

• Specifying only “high speed door” without “freezer / insulated / heated guides.” Ambient PVC rapid doors are a different product class.

• Accepting certificate logos without files. Ask sales for current certification documents for your destination market.

• Ignoring night-seal strategy. Daytime rapid traffic + overnight sliding leaf is a layout decision, not an afterthought.

6) Short FAQ

What information do I need to specify a freezer high speed door?

Clear opening size, temperatures on both sides, cycles per day, power supply, preferred activation (radar, loop, remote, or pull cord), quantity, and destination country. Send drawings to info@leshochina.com or call +86-15851675955.

What working temperature and max size does LESHO list for its freezer high speed door?

MIC catalog figures: working temperature −35°C to 65°C; maximum size about 6000 × 6000 mm. Confirm both sides of your opening and the exact size on the quotation.

How is a cold storage high speed door different from a standard rapid door?

A cold storage / freezer high speed door uses an insulated curtain (about 30 mm on the LESHO model) and heated anti-freeze guides. A standard PVC high-speed door is usually a single flexible curtain for ambient partitions.

What lead time and warranty should I put in the tender?

LESHO’s standard commercial line is a 1-year warranty and a normal lead time of 15–20 days after drawing confirmation. Both must be confirmed on the proforma invoice.

Where can I compare price drivers before I RFQ?

Read LESHO’s freezer high speed door price guide for FOB vs installed cost structure, then request a project quote. Do not treat a public band as a locked SKU price.

About LESHO / CTA

Zhengzhou Lesho Door Co., Ltd. (郑州莱烁门业有限公司; USCC 91410100MA481NMC8B) manufactures LESHO industrial doors. Established 2020-03-02; founders entered the industrial door industry in 1992. Factory / HQ: No. 168, Gangwang Village, Zhengzhou Airport Economic Comprehensive Experimental Zone, Henan, China. Shanghai is a sales office only.

Request a free factory-direct quote: contact page · info@leshochina.com · +86-15851675955
Product: freezer high speed door · FAQ: buyer FAQ · Costs: price guide